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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/184250">184250</a></dd>
<dt>Author</dt> <dd>dburkart@apple.com</dd>
<dt>Date</dt> <dd>2015-05-12 21:17:10 -0700 (Tue, 12 May 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/183971">r183971</a>. rdar://problem/20065572</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari601132branchSourceWebCoreChangeLog">branches/safari-601.1.32-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari601132branchSourceWebCoreModulesmediacontrolsmediaControlsApplejs">branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsApple.js</a></li>
<li><a href="#branchessafari601132branchSourceWebCoreModulesmediacontrolsmediaControlsiOSjs">branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsiOS.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari601132branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebCore/ChangeLog (184249 => 184250)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebCore/ChangeLog        2015-05-13 04:10:54 UTC (rev 184249)
+++ branches/safari-601.1.32-branch/Source/WebCore/ChangeLog        2015-05-13 04:17:10 UTC (rev 184250)
</span><span class="lines">@@ -2,298 +2,294 @@
</span><span class="cx"> Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx"> dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-        Merge r183970. rdar://problem/20769741
</del><ins>+        Merge r183971. rdar://problem/20065572
</ins><span class="cx"> 
</span><del>-    2015-05-07  Simon Fraser  &lt;simon.fraser@apple.com&gt;
</del><ins>+    2015-05-07  Dean Jackson  &lt;dino@apple.com&gt;
</ins><span class="cx"> 
</span><del>-            REGRESSION (r183300): Fixed elements flash when scrolling
-            https://bugs.webkit.org/show_bug.cgi?id=144778
-            rdar://problem/20769741
</del><ins>+            [iOS] MediaControls: disappear while scrubbing
+            https://bugs.webkit.org/show_bug.cgi?id=144777
+            &lt;rdar://problem/20065572&gt;
</ins><span class="cx"> 
</span><del>-            Reviewed by Dean Jackson.
</del><ins>+            Reviewed by Eric Carlson.
</ins><span class="cx"> 
</span><del>-            After r183300 we can detached layer backing store when outside the coverage region.
-            However, position:fixed layers are moved around by the ScrollingCoordinator behind
-            GraphicsLayer's back, so we can do layer flushes with stale information about layer
-            geometry.
</del><ins>+            If we are scrubbing we shouldn't hide the controls.
</ins><span class="cx"> 
</span><del>-            To avoid dropping backing store for layers in this situation, prevent backing
-            store detachment on layers registered with the ScrollingCoordinator as viewport-constrained
-            layers. Preventing detachment on a layer also prevents detachment on all descendant
-            layers.
</del><ins>+            * Modules/mediacontrols/mediaControlsApple.js:
+            (Controller.prototype.hideControls): Return early if we are scrubbing.
+            * Modules/mediacontrols/mediaControlsiOS.js:
+            (ControllerIOS.prototype): Add initial value for _potentiallyScrubbing and
+            rename from non-underscored value throughout the file.
+            (ControllerIOS.prototype.handleTimelineTouchEnd): When we finish scrubbing, reset
+            the timer to hide the controls.
</ins><span class="cx"> 
</span><del>-            * platform/graphics/GraphicsLayer.h:
-            (WebCore::GraphicsLayer::setAllowsBackingStoreDetachment):
-            (WebCore::GraphicsLayer::allowsBackingStoreDetachment):
-            * platform/graphics/ca/GraphicsLayerCA.cpp:
-            (WebCore::GraphicsLayerCA::GraphicsLayerCA):
-            (WebCore::GraphicsLayerCA::setVisibleAndCoverageRects): Set m_intersectsCoverageRect to true
-            if backing store detachment is prevented.
-            (WebCore::GraphicsLayerCA::recursiveCommitChanges): Set a bit in the CommitState to
-            communicate to descendants that detachment is prevented.
-            * platform/graphics/ca/GraphicsLayerCA.h:
-            (WebCore::GraphicsLayerCA::CommitState::CommitState): Deleted.
-            * rendering/RenderLayerBacking.cpp:
-            (WebCore::RenderLayerBacking::setIsScrollCoordinatedWithViewportConstrainedRole):
-            * rendering/RenderLayerBacking.h:
-            (WebCore::RenderLayerBacking::setScrollingNodeIDForRole): If registering with a non-zero
-            nodeID for the ViewportConstrained role, turn off backing store detachment.
-
</del><span class="cx">     2015-05-12  Dana Burkart
</span><span class="cx">     Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx">     dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-            Merge r183965. rdar://problem/20866590
</del><ins>+            Merge r183970. rdar://problem/20769741
</ins><span class="cx"> 
</span><del>-        2015-05-07  Dean Jackson  &lt;dino@apple.com&gt;
</del><ins>+        2015-05-07  Simon Fraser  &lt;simon.fraser@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                [iOS] While scrubbing and holding down, video continues to play
-                https://bugs.webkit.org/show_bug.cgi?id=144776
-                &lt;rdar://problem/20863757&gt;
</del><ins>+                REGRESSION (r183300): Fixed elements flash when scrolling
+                https://bugs.webkit.org/show_bug.cgi?id=144778
+                rdar://problem/20769741
</ins><span class="cx"> 
</span><del>-                Reviewed by Simon Fraser.
</del><ins>+                Reviewed by Dean Jackson.
</ins><span class="cx"> 
</span><del>-                When we are scrubbing a video, we should pause playback. As we
-                let go of the scrubber playback can resume (but only if it was
-                playing originally).
</del><ins>+                After r183300 we can detached layer backing store when outside the coverage region.
+                However, position:fixed layers are moved around by the ScrollingCoordinator behind
+                GraphicsLayer's back, so we can do layer flushes with stale information about layer
+                geometry.
</ins><span class="cx"> 
</span><del>-                * Modules/mediacontrols/mediaControlsiOS.js:
-                (ControllerIOS.prototype.createControls): Listen for touchstart on the scrubber.
-                (ControllerIOS.prototype.handleTimelineInput): Call the prototype, but pause if necessary.
-                (ControllerIOS.prototype.handleTimelineChange): Just moved this to be with the other timeline functions.
-                (ControllerIOS.prototype.handleTimelineTouchStart): Add the listeners for end and cancel. Remember that we are
-                potentially about to scrub.
-                (ControllerIOS.prototype.handleTimelineTouchEnd): Remove the listeners.
</del><ins>+                To avoid dropping backing store for layers in this situation, prevent backing
+                store detachment on layers registered with the ScrollingCoordinator as viewport-constrained
+                layers. Preventing detachment on a layer also prevents detachment on all descendant
+                layers.
</ins><span class="cx"> 
</span><ins>+                * platform/graphics/GraphicsLayer.h:
+                (WebCore::GraphicsLayer::setAllowsBackingStoreDetachment):
+                (WebCore::GraphicsLayer::allowsBackingStoreDetachment):
+                * platform/graphics/ca/GraphicsLayerCA.cpp:
+                (WebCore::GraphicsLayerCA::GraphicsLayerCA):
+                (WebCore::GraphicsLayerCA::setVisibleAndCoverageRects): Set m_intersectsCoverageRect to true
+                if backing store detachment is prevented.
+                (WebCore::GraphicsLayerCA::recursiveCommitChanges): Set a bit in the CommitState to
+                communicate to descendants that detachment is prevented.
+                * platform/graphics/ca/GraphicsLayerCA.h:
+                (WebCore::GraphicsLayerCA::CommitState::CommitState): Deleted.
+                * rendering/RenderLayerBacking.cpp:
+                (WebCore::RenderLayerBacking::setIsScrollCoordinatedWithViewportConstrainedRole):
+                * rendering/RenderLayerBacking.h:
+                (WebCore::RenderLayerBacking::setScrollingNodeIDForRole): If registering with a non-zero
+                nodeID for the ViewportConstrained role, turn off backing store detachment.
+
</ins><span class="cx">         2015-05-12  Dana Burkart
</span><span class="cx">         Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx">         dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-                Merge r183954. rdar://problem/20281886
</del><ins>+                Merge r183965. rdar://problem/20866590
</ins><span class="cx"> 
</span><del>-            2015-05-07  Beth Dakin  &lt;bdakin@apple.com&gt;
</del><ins>+            2015-05-07  Dean Jackson  &lt;dino@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                    New force-related DOM events should fire in WK1 views
-                    https://bugs.webkit.org/show_bug.cgi?id=144663
-                    -and corresponding-
-                    rdar://problem/20281886
</del><ins>+                    [iOS] While scrubbing and holding down, video continues to play
+                    https://bugs.webkit.org/show_bug.cgi?id=144776
+                    &lt;rdar://problem/20863757&gt;
</ins><span class="cx"> 
</span><del>-                    Reviewed by Sam Weinig.
</del><ins>+                    Reviewed by Simon Fraser.
</ins><span class="cx"> 
</span><del>-                    All of the WK1 mouse events need to take the correspondingPressureEvent.
-                    * page/EventHandler.h:
</del><ins>+                    When we are scrubbing a video, we should pause playback. As we
+                    let go of the scrubber playback can resume (but only if it was
+                    playing originally).
</ins><span class="cx"> 
</span><del>-                    Make correspondingPressureEvent a part of CurrentEventScope. This is needed to
-                    have accurate pressure information for all of the mouse events in subframes.
-                    * page/mac/EventHandlerMac.mm:
-                    (WebCore::correspondingPressureEventSlot):
-                    (WebCore::EventHandler::correspondingPressureEvent):
-                    (WebCore::CurrentEventScope::CurrentEventScope):
-                    (WebCore::CurrentEventScope::~CurrentEventScope):
</del><ins>+                    * Modules/mediacontrols/mediaControlsiOS.js:
+                    (ControllerIOS.prototype.createControls): Listen for touchstart on the scrubber.
+                    (ControllerIOS.prototype.handleTimelineInput): Call the prototype, but pause if necessary.
+                    (ControllerIOS.prototype.handleTimelineChange): Just moved this to be with the other timeline functions.
+                    (ControllerIOS.prototype.handleTimelineTouchStart): Add the listeners for end and cancel. Remember that we are
+                    potentially about to scrub.
+                    (ControllerIOS.prototype.handleTimelineTouchEnd): Remove the listeners.
</ins><span class="cx"> 
</span><del>-                    These events don’t have an associated pressure, so send nil for the
-                    correspondingPressureEvent.
-                    (WebCore::EventHandler::wheelEvent):
-                    (WebCore::EventHandler::keyEvent):
</del><ins>+            2015-05-12  Dana Burkart
+            Dana Burkart  &lt;dburkart@apple.com
+            dburkart@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                    Pipe through correspondingPressureEvent.
-                    (WebCore::EventHandler::mouseDown):
-                    (WebCore::EventHandler::mouseDragged):
-                    (WebCore::EventHandler::mouseUp):
-                    (WebCore::EventHandler::mouseMoved):
</del><ins>+                    Merge r183954. rdar://problem/20281886
</ins><span class="cx"> 
</span><del>-                    New function to handle pressure change events.
-                    (WebCore::EventHandler::pressureChange):
</del><ins>+                2015-05-07  Beth Dakin  &lt;bdakin@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                    Pipe through correspondingPressureEvent.
-                    (WebCore::EventHandler::passMouseMovedEventToScrollbars):
-                    (WebCore::EventHandler::currentPlatformMouseEvent):
</del><ins>+                        New force-related DOM events should fire in WK1 views
+                        https://bugs.webkit.org/show_bug.cgi?id=144663
+                        -and corresponding-
+                        rdar://problem/20281886
</ins><span class="cx"> 
</span><del>-                    Take the correspondingPressureEvent in order to build a PlatformMouseEvent with
-                    the correct pressure information.
-                    * platform/mac/PlatformEventFactoryMac.h:
-                    * platform/mac/PlatformEventFactoryMac.mm:
-                    (WebCore::globalPointForEvent):
-                    (WebCore::pointForEvent):
-                    (WebCore::mouseButtonForEvent):
-                    (WebCore::PlatformMouseEventBuilder::PlatformMouseEventBuilder):
-                    (WebCore::PlatformEventFactory::createPlatformMouseEvent):
</del><ins>+                        Reviewed by Sam Weinig.
</ins><span class="cx"> 
</span><del>-            2015-05-12  Dana Burkart
-            Dana Burkart  &lt;dburkart@apple.com
-            dburkart@apple.com&gt;
</del><ins>+                        All of the WK1 mouse events need to take the correspondingPressureEvent.
+                        * page/EventHandler.h:
</ins><span class="cx"> 
</span><del>-                    Merge r183953. rdar://problem/19997548
</del><ins>+                        Make correspondingPressureEvent a part of CurrentEventScope. This is needed to
+                        have accurate pressure information for all of the mouse events in subframes.
+                        * page/mac/EventHandlerMac.mm:
+                        (WebCore::correspondingPressureEventSlot):
+                        (WebCore::EventHandler::correspondingPressureEvent):
+                        (WebCore::CurrentEventScope::CurrentEventScope):
+                        (WebCore::CurrentEventScope::~CurrentEventScope):
</ins><span class="cx"> 
</span><del>-                2015-05-06  Roger Fong  &lt;roger_fong@apple.com&gt;
</del><ins>+                        These events don’t have an associated pressure, so send nil for the
+                        correspondingPressureEvent.
+                        (WebCore::EventHandler::wheelEvent):
+                        (WebCore::EventHandler::keyEvent):
</ins><span class="cx"> 
</span><del>-                        Media Controls: Scrubber should be independent of actual video time, causes scrubber to be jumpy.
-                        https://bugs.webkit.org/show_bug.cgi?id=144700.
-                        &lt;rdar://problem/19997548&gt;
</del><ins>+                        Pipe through correspondingPressureEvent.
+                        (WebCore::EventHandler::mouseDown):
+                        (WebCore::EventHandler::mouseDragged):
+                        (WebCore::EventHandler::mouseUp):
+                        (WebCore::EventHandler::mouseMoved):
</ins><span class="cx"> 
</span><del>-                        Reviewed by Jer Noble.
</del><ins>+                        New function to handle pressure change events.
+                        (WebCore::EventHandler::pressureChange):
</ins><span class="cx"> 
</span><del>-                        Update time and timeline during the timeline input event instead of the wrapper's mousemove.
-                        (Controller.prototype.handleWrapperMouseMove):
-                        (Controller.prototype.handleTimelineMouseMove):
-                        (Controller.prototype.drawTimelineBackground):
</del><ins>+                        Pipe through correspondingPressureEvent.
+                        (WebCore::EventHandler::passMouseMovedEventToScrollbars):
+                        (WebCore::EventHandler::currentPlatformMouseEvent):
</ins><span class="cx"> 
</span><del>-                        (Controller.prototype.updateControlsWhileScrubbing):
-                        Updates time and scrubber to reflect timeline user input.
</del><ins>+                        Take the correspondingPressureEvent in order to build a PlatformMouseEvent with
+                        the correct pressure information.
+                        * platform/mac/PlatformEventFactoryMac.h:
+                        * platform/mac/PlatformEventFactoryMac.mm:
+                        (WebCore::globalPointForEvent):
+                        (WebCore::pointForEvent):
+                        (WebCore::mouseButtonForEvent):
+                        (WebCore::PlatformMouseEventBuilder::PlatformMouseEventBuilder):
+                        (WebCore::PlatformEventFactory::createPlatformMouseEvent):
</ins><span class="cx"> 
</span><span class="cx">                 2015-05-12  Dana Burkart
</span><span class="cx">                 Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx">                 dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-                        Merge r183943. rdar://problem/19913748
</del><ins>+                        Merge r183953. rdar://problem/19997548
</ins><span class="cx"> 
</span><del>-                    2015-05-07  Simon Fraser  &lt;simon.fraser@apple.com&gt;
</del><ins>+                    2015-05-06  Roger Fong  &lt;roger_fong@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                            Remove the WK1-only code path for independently composited iframes
-                            https://bugs.webkit.org/show_bug.cgi?id=144722
</del><ins>+                            Media Controls: Scrubber should be independent of actual video time, causes scrubber to be jumpy.
+                            https://bugs.webkit.org/show_bug.cgi?id=144700.
+                            &lt;rdar://problem/19997548&gt;
</ins><span class="cx"> 
</span><del>-                            Reviewed by Dean Jackson.
</del><ins>+                            Reviewed by Jer Noble.
</ins><span class="cx"> 
</span><del>-                            In WebKit1 on Mac, we allowed iframes to be composited independently of their
-                            parent document, relying on the fact that the frame's platform view can host
-                            a layer-backed view. However, this ran into bugs (rdar://problem/18862298),
-                            and triggers the assertion at the end of FrameView::updateLayoutAndStyleIfNeededRecursive(),
-                            because the compositing update after a layout can dirty style in notifyIFramesOfCompositingChange().
</del><ins>+                            Update time and timeline during the timeline input event instead of the wrapper's mousemove.
+                            (Controller.prototype.handleWrapperMouseMove):
+                            (Controller.prototype.handleTimelineMouseMove):
+                            (Controller.prototype.drawTimelineBackground):
</ins><span class="cx"> 
</span><del>-                            Removing the WK1-only code path solves these problems. It also eliminates the need
-                            to do compositing-specific frame overlap testing.
</del><ins>+                            (Controller.prototype.updateControlsWhileScrubbing):
+                            Updates time and scrubber to reflect timeline user input.
</ins><span class="cx"> 
</span><del>-                            * page/FrameView.cpp:
-                            (WebCore::FrameView::setIsOverlapped): No need to do compositing-related things here.
-                            Any iframe that gets composited will participate in the normal compositing overlap
-                            testing in its parent frame.
-                            (WebCore::FrameView::hasCompositedContentIncludingDescendants): Deleted.
-                            (WebCore::FrameView::hasCompositingAncestor): Deleted.
-                            * page/FrameView.h:
-                            * rendering/RenderLayerCompositor.cpp: Replace ownerElement() checks in this file
-                            with an isMainFrameCompositor() for readability. Some 0-&gt;nullptr.
-                            (WebCore::RenderLayerCompositor::cacheAcceleratedCompositingFlags):
-                            (WebCore::RenderLayerCompositor::chromeClient):
-                            (WebCore::RenderLayerCompositor::enclosingCompositorFlushingLayers):
-                            (WebCore::RenderLayerCompositor::updateCompositingLayers):
-                            (WebCore::RenderLayerCompositor::appendDocumentOverlayLayers):
-                            (WebCore::RenderLayerCompositor::updateBacking):
-                            (WebCore::RenderLayerCompositor::layerTreeAsText):
-                            (WebCore::RenderLayerCompositor::frameContentsCompositor):
-                            (WebCore::RenderLayerCompositor::setIsInWindow):
-                            (WebCore::RenderLayerCompositor::requiresCompositingForScrollableFrame):
-                            (WebCore::RenderLayerCompositor::requiresCompositingForFrame): frameRenderer.requiresAcceleratedCompositing()
-                            already bails on no content RenderView, so the shouldPropagateCompositingToEnclosingFrame() check does
-                            nothing and is removed.
-                            (WebCore::RenderLayerCompositor::isAsyncScrollableStickyLayer):
-                            (WebCore::RenderLayerCompositor::requiresScrollLayer):
-                            (WebCore::RenderLayerCompositor::documentUsesTiledBacking):
-                            (WebCore::RenderLayerCompositor::isMainFrameCompositor):
-                            (WebCore::RenderLayerCompositor::shouldCompositeOverflowControls):
-                            (WebCore::RenderLayerCompositor::requiresOverhangAreasLayer):
-                            (WebCore::RenderLayerCompositor::requiresContentShadowLayer):
-                            (WebCore::RenderLayerCompositor::updateLayerForTopOverhangArea):
-                            (WebCore::RenderLayerCompositor::updateLayerForBottomOverhangArea):
-                            (WebCore::RenderLayerCompositor::updateLayerForHeader):
-                            (WebCore::RenderLayerCompositor::updateLayerForFooter):
-                            (WebCore::RenderLayerCompositor::ensureRootLayer): Main frame attaches via ChromeClient,
-                            all other frames attach via parent frame.
-                            (WebCore::RenderLayerCompositor::notifyIFramesOfCompositingChange): This call to
-                            scheduleSetNeedsStyleRecalc(SyntheticStyleChange) was the source of dirtying style after
-                            layout, but is no longer needed so remove it.
-                            (WebCore::RenderLayerCompositor::registerAllViewportConstrainedLayers):
-                            (WebCore::RenderLayerCompositor::unregisterAllViewportConstrainedLayers):
-                            (WebCore::RenderLayerCompositor::scrollingCoordinator):
-                            (WebCore::RenderLayerCompositor::graphicsLayerFactory):
-                            (WebCore::RenderLayerCompositor::allowsIndependentlyCompositedFrames): Deleted.
-                            (WebCore::RenderLayerCompositor::shouldPropagateCompositingToEnclosingFrame): Deleted.
-                            (WebCore::RenderLayerCompositor::mainFrameBackingIsTiled): Deleted. This was mis-named;
-                            it really asks whether the document uses tiled backing, but does not check for main frame.
-                            * rendering/RenderLayerCompositor.h:
-                            * rendering/RenderWidget.cpp:
-                            (WebCore::RenderWidget::paintContents): No need to do frame overlap testing for
-                            compositing now.
-
</del><span class="cx">                     2015-05-12  Dana Burkart
</span><span class="cx">                     Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx">                     dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-                            Merge r183927. rdar://problem/20854785
</del><ins>+                            Merge r183943. rdar://problem/19913748
</ins><span class="cx"> 
</span><del>-                        2015-05-07  Eric Carlson  &lt;eric.carlson@apple.com&gt;
</del><ins>+                        2015-05-07  Simon Fraser  &lt;simon.fraser@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                                [Mac] Playback target isn't set on new element
-                                https://bugs.webkit.org/show_bug.cgi?id=144724
</del><ins>+                                Remove the WK1-only code path for independently composited iframes
+                                https://bugs.webkit.org/show_bug.cgi?id=144722
</ins><span class="cx"> 
</span><del>-                                Reviewed by Jer Noble.
</del><ins>+                                Reviewed by Dean Jackson.
</ins><span class="cx"> 
</span><del>-                                * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
-                                * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
-                                (WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer): Call setShouldPlayToPlaybackTarget
-                                if necessary.
-                                (WebCore::MediaPlayerPrivateAVFoundationObjC::setShouldPlayToPlaybackTarget): Remember
-                                the setting in case we don't have an AVPlayer yet.
</del><ins>+                                In WebKit1 on Mac, we allowed iframes to be composited independently of their
+                                parent document, relying on the fact that the frame's platform view can host
+                                a layer-backed view. However, this ran into bugs (rdar://problem/18862298),
+                                and triggers the assertion at the end of FrameView::updateLayoutAndStyleIfNeededRecursive(),
+                                because the compositing update after a layout can dirty style in notifyIFramesOfCompositingChange().
</ins><span class="cx"> 
</span><ins>+                                Removing the WK1-only code path solves these problems. It also eliminates the need
+                                to do compositing-specific frame overlap testing.
+
+                                * page/FrameView.cpp:
+                                (WebCore::FrameView::setIsOverlapped): No need to do compositing-related things here.
+                                Any iframe that gets composited will participate in the normal compositing overlap
+                                testing in its parent frame.
+                                (WebCore::FrameView::hasCompositedContentIncludingDescendants): Deleted.
+                                (WebCore::FrameView::hasCompositingAncestor): Deleted.
+                                * page/FrameView.h:
+                                * rendering/RenderLayerCompositor.cpp: Replace ownerElement() checks in this file
+                                with an isMainFrameCompositor() for readability. Some 0-&gt;nullptr.
+                                (WebCore::RenderLayerCompositor::cacheAcceleratedCompositingFlags):
+                                (WebCore::RenderLayerCompositor::chromeClient):
+                                (WebCore::RenderLayerCompositor::enclosingCompositorFlushingLayers):
+                                (WebCore::RenderLayerCompositor::updateCompositingLayers):
+                                (WebCore::RenderLayerCompositor::appendDocumentOverlayLayers):
+                                (WebCore::RenderLayerCompositor::updateBacking):
+                                (WebCore::RenderLayerCompositor::layerTreeAsText):
+                                (WebCore::RenderLayerCompositor::frameContentsCompositor):
+                                (WebCore::RenderLayerCompositor::setIsInWindow):
+                                (WebCore::RenderLayerCompositor::requiresCompositingForScrollableFrame):
+                                (WebCore::RenderLayerCompositor::requiresCompositingForFrame): frameRenderer.requiresAcceleratedCompositing()
+                                already bails on no content RenderView, so the shouldPropagateCompositingToEnclosingFrame() check does
+                                nothing and is removed.
+                                (WebCore::RenderLayerCompositor::isAsyncScrollableStickyLayer):
+                                (WebCore::RenderLayerCompositor::requiresScrollLayer):
+                                (WebCore::RenderLayerCompositor::documentUsesTiledBacking):
+                                (WebCore::RenderLayerCompositor::isMainFrameCompositor):
+                                (WebCore::RenderLayerCompositor::shouldCompositeOverflowControls):
+                                (WebCore::RenderLayerCompositor::requiresOverhangAreasLayer):
+                                (WebCore::RenderLayerCompositor::requiresContentShadowLayer):
+                                (WebCore::RenderLayerCompositor::updateLayerForTopOverhangArea):
+                                (WebCore::RenderLayerCompositor::updateLayerForBottomOverhangArea):
+                                (WebCore::RenderLayerCompositor::updateLayerForHeader):
+                                (WebCore::RenderLayerCompositor::updateLayerForFooter):
+                                (WebCore::RenderLayerCompositor::ensureRootLayer): Main frame attaches via ChromeClient,
+                                all other frames attach via parent frame.
+                                (WebCore::RenderLayerCompositor::notifyIFramesOfCompositingChange): This call to
+                                scheduleSetNeedsStyleRecalc(SyntheticStyleChange) was the source of dirtying style after
+                                layout, but is no longer needed so remove it.
+                                (WebCore::RenderLayerCompositor::registerAllViewportConstrainedLayers):
+                                (WebCore::RenderLayerCompositor::unregisterAllViewportConstrainedLayers):
+                                (WebCore::RenderLayerCompositor::scrollingCoordinator):
+                                (WebCore::RenderLayerCompositor::graphicsLayerFactory):
+                                (WebCore::RenderLayerCompositor::allowsIndependentlyCompositedFrames): Deleted.
+                                (WebCore::RenderLayerCompositor::shouldPropagateCompositingToEnclosingFrame): Deleted.
+                                (WebCore::RenderLayerCompositor::mainFrameBackingIsTiled): Deleted. This was mis-named;
+                                it really asks whether the document uses tiled backing, but does not check for main frame.
+                                * rendering/RenderLayerCompositor.h:
+                                * rendering/RenderWidget.cpp:
+                                (WebCore::RenderWidget::paintContents): No need to do frame overlap testing for
+                                compositing now.
+
</ins><span class="cx">                         2015-05-12  Dana Burkart
</span><span class="cx">                         Dana Burkart  &lt;dburkart@apple.com
</span><span class="cx">                         dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-                                Merge r183909. rdar://problem/18894598
</del><ins>+                                Merge r183927. rdar://problem/20854785
</ins><span class="cx"> 
</span><del>-                            2015-05-06  Daniel Bates  &lt;dabates@apple.com&gt;
</del><ins>+                            2015-05-07  Eric Carlson  &lt;eric.carlson@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                                    [iOS][WK2] Pause/resume database thread when UIProcess enters/leaves the background
-                                    https://bugs.webkit.org/show_bug.cgi?id=144657
-                                    &lt;rdar://problem/18894598&gt;
</del><ins>+                                    [Mac] Playback target isn't set on new element
+                                    https://bugs.webkit.org/show_bug.cgi?id=144724
</ins><span class="cx"> 
</span><del>-                                    Reviewed by Andy Estes.
</del><ins>+                                    Reviewed by Jer Noble.
</ins><span class="cx"> 
</span><del>-                                    Export WebCore functionality to pause and resume the database thread so that we can
-                                    make use of this functionality from WebKit2.
</del><ins>+                                    * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
+                                    * platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
+                                    (WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer): Call setShouldPlayToPlaybackTarget
+                                    if necessary.
+                                    (WebCore::MediaPlayerPrivateAVFoundationObjC::setShouldPlayToPlaybackTarget): Remember
+                                    the setting in case we don't have an AVPlayer yet.
</ins><span class="cx"> 
</span><del>-                                    * Modules/webdatabase/AbstractDatabaseServer.h:
-                                    * Modules/webdatabase/DatabaseManager.cpp:
-                                    (WebCore::DatabaseManager::setPauseAllDatabases): Added; turns around and calls DatabaseServer::setPauseAllDatabases().
-                                    * Modules/webdatabase/DatabaseManager.h:
-                                    * Modules/webdatabase/DatabaseServer.cpp:
-                                    (WebCore::DatabaseServer::setPauseAllDatabases): Added; turns around and calls
-                                    DatabaseTracker::tracker().setDatabasesPaused() to pause or resume the database thread.
-                                    For now, we guard this call with PLATFORM(IOS). We'll look to remove this guard once
-                                    we fix &lt;https://bugs.webkit.org/show_bug.cgi?id=144660&gt;.
-                                    * Modules/webdatabase/DatabaseServer.h:
-
</del><span class="cx">                             2015-05-12  Dana Burkart
</span><del>-                            Dana Burkart  &lt;dburkart@apple.com&gt;
</del><ins>+                            Dana Burkart  &lt;dburkart@apple.com
+                            dburkart@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                                    Merge r183942. rdar://problem/20049088
</del><ins>+                                    Merge r183909. rdar://problem/18894598
</ins><span class="cx"> 
</span><del>-                                2015-05-06  Dean Jackson  &lt;dino@apple.com&gt;
</del><ins>+                                2015-05-06  Daniel Bates  &lt;dabates@apple.com&gt;
</ins><span class="cx"> 
</span><del>-                                        Handle backdrop views that have to tile
-                                        https://bugs.webkit.org/show_bug.cgi?id=142317
-                                        &lt;rdar://problem/20049088&gt;
</del><ins>+                                        [iOS][WK2] Pause/resume database thread when UIProcess enters/leaves the background
+                                        https://bugs.webkit.org/show_bug.cgi?id=144657
+                                        &lt;rdar://problem/18894598&gt;
</ins><span class="cx"> 
</span><del>-                                        Reviewed by Simon Fraser.
</del><ins>+                                        Reviewed by Andy Estes.
</ins><span class="cx"> 
</span><del>-                                        Take 2 - this was rolled out because Mavericks was crashing.
</del><ins>+                                        Export WebCore functionality to pause and resume the database thread so that we can
+                                        make use of this functionality from WebKit2.
</ins><span class="cx"> 
</span><del>-                                        Make sure backdrop layers don't tile. If they are big
-                                        enough, we'll leave it to the platform compositor to handle.
</del><ins>+                                        * Modules/webdatabase/AbstractDatabaseServer.h:
+                                        * Modules/webdatabase/DatabaseManager.cpp:
+                                        (WebCore::DatabaseManager::setPauseAllDatabases): Added; turns around and calls DatabaseServer::setPauseAllDatabases().
+                                        * Modules/webdatabase/DatabaseManager.h:
+                                        * Modules/webdatabase/DatabaseServer.cpp:
+                                        (WebCore::DatabaseServer::setPauseAllDatabases): Added; turns around and calls
+                                        DatabaseTracker::tracker().setDatabasesPaused() to pause or resume the database thread.
+                                        For now, we guard this call with PLATFORM(IOS). We'll look to remove this guard once
+                                        we fix &lt;https://bugs.webkit.org/show_bug.cgi?id=144660&gt;.
+                                        * Modules/webdatabase/DatabaseServer.h:
</ins><span class="cx"> 
</span><del>-                                        This also fixes a bug where if a layer changed from a backdrop
-                                        type to a tiled type, it would still retain its custom appearance
-                                        and we'd try to add children to the wrong layer.
-
-                                        Test: compositing/media-controls-bar-appearance-big.html
-
-                                        * platform/graphics/ca/GraphicsLayerCA.cpp:
-                                        (WebCore::GraphicsLayerCA::commitLayerChangesBeforeSublayers): Check if
-                                        a layer needs a backdrop before checking if it needs to tile.
-
</del><span class="cx">                                 2015-05-12  Dana Burkart
</span><span class="cx">                                 Dana Burkart  &lt;dburkart@apple.com&gt;
</span><span class="cx"> 
</span><del>-                                        Merge r183894. rdar://problem/20049088
</del><ins>+                                        Merge r183942. rdar://problem/20049088
</ins><span class="cx"> 
</span><span class="cx">                                     2015-05-06  Dean Jackson  &lt;dino@apple.com&gt;
</span><span class="cx"> 
</span><span class="lines">@@ -303,6 +299,8 @@
</span><span class="cx"> 
</span><span class="cx">                                             Reviewed by Simon Fraser.
</span><span class="cx"> 
</span><ins>+                                            Take 2 - this was rolled out because Mavericks was crashing.
+
</ins><span class="cx">                                             Make sure backdrop layers don't tile. If they are big
</span><span class="cx">                                             enough, we'll leave it to the platform compositor to handle.
</span><span class="cx"> 
</span><span class="lines">@@ -316,6 +314,32 @@
</span><span class="cx">                                             (WebCore::GraphicsLayerCA::commitLayerChangesBeforeSublayers): Check if
</span><span class="cx">                                             a layer needs a backdrop before checking if it needs to tile.
</span><span class="cx"> 
</span><ins>+                                    2015-05-12  Dana Burkart
+                                    Dana Burkart  &lt;dburkart@apple.com&gt;
+
+                                            Merge r183894. rdar://problem/20049088
+
+                                        2015-05-06  Dean Jackson  &lt;dino@apple.com&gt;
+
+                                                Handle backdrop views that have to tile
+                                                https://bugs.webkit.org/show_bug.cgi?id=142317
+                                                &lt;rdar://problem/20049088&gt;
+
+                                                Reviewed by Simon Fraser.
+
+                                                Make sure backdrop layers don't tile. If they are big
+                                                enough, we'll leave it to the platform compositor to handle.
+
+                                                This also fixes a bug where if a layer changed from a backdrop
+                                                type to a tiled type, it would still retain its custom appearance
+                                                and we'd try to add children to the wrong layer.
+
+                                                Test: compositing/media-controls-bar-appearance-big.html
+
+                                                * platform/graphics/ca/GraphicsLayerCA.cpp:
+                                                (WebCore::GraphicsLayerCA::commitLayerChangesBeforeSublayers): Check if
+                                                a layer needs a backdrop before checking if it needs to tile.
+
</ins><span class="cx"> 2015-05-06  Brent Fulgham  &lt;bfulgham@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Scroll-snap points do not handle margins and padding propertly
</span></span></pre></div>
<a id="branchessafari601132branchSourceWebCoreModulesmediacontrolsmediaControlsApplejs"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsApple.js (184249 => 184250)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsApple.js        2015-05-13 04:10:54 UTC (rev 184249)
+++ branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsApple.js        2015-05-13 04:17:10 UTC (rev 184250)
</span><span class="lines">@@ -1362,7 +1362,7 @@
</span><span class="cx"> 
</span><span class="cx">     hideControls: function()
</span><span class="cx">     {
</span><del>-        if (this.controlsAlwaysVisible())
</del><ins>+        if (this.controlsAlwaysVisible() || this._potentiallyScrubbing)
</ins><span class="cx">             return;
</span><span class="cx"> 
</span><span class="cx">         this.updateShouldListenForPlaybackTargetAvailabilityEvent();
</span></span></pre></div>
<a id="branchessafari601132branchSourceWebCoreModulesmediacontrolsmediaControlsiOSjs"></a>
<div class="modfile"><h4>Modified: branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsiOS.js (184249 => 184250)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsiOS.js        2015-05-13 04:10:54 UTC (rev 184249)
+++ branches/safari-601.1.32-branch/Source/WebCore/Modules/mediacontrols/mediaControlsiOS.js        2015-05-13 04:17:10 UTC (rev 184250)
</span><span class="lines">@@ -16,6 +16,7 @@
</span><span class="cx"> 
</span><span class="cx">     this._timelineIsHidden = false;
</span><span class="cx">     this._currentDisplayWidth = 0;
</span><ins>+    this._potentiallyScrubbing = false;
</ins><span class="cx">     this.scheduleUpdateLayoutForDisplayedWidth();
</span><span class="cx"> 
</span><span class="cx">     host.controlsDependOnPageScaleFactor = true;
</span><span class="lines">@@ -493,7 +494,7 @@
</span><span class="cx">     },
</span><span class="cx"> 
</span><span class="cx">     handleTimelineInput: function(event) {
</span><del>-        if (this.potentiallyScrubbing)
</del><ins>+        if (this._potentiallyScrubbing)
</ins><span class="cx">             this.video.pause();
</span><span class="cx">         Controller.prototype.handleTimelineInput.call(this, event);
</span><span class="cx">     },
</span><span class="lines">@@ -504,7 +505,7 @@
</span><span class="cx">     },
</span><span class="cx"> 
</span><span class="cx">     handleTimelineTouchStart: function(event) {
</span><del>-        this.potentiallyScrubbing = true;
</del><ins>+        this._potentiallyScrubbing = true;
</ins><span class="cx">         this.wasPlayingWhenScrubbingStarted = !this.video.paused;
</span><span class="cx">         this.listenFor(this.controls.timeline, 'touchend', this.handleTimelineTouchEnd);
</span><span class="cx">         this.listenFor(this.controls.timeline, 'touchcancel', this.handleTimelineTouchEnd);
</span><span class="lines">@@ -513,9 +514,11 @@
</span><span class="cx">     handleTimelineTouchEnd: function(event) {
</span><span class="cx">         this.stopListeningFor(this.controls.timeline, 'touchend', this.handleTimelineTouchEnd);
</span><span class="cx">         this.stopListeningFor(this.controls.timeline, 'touchcancel', this.handleTimelineTouchEnd);
</span><del>-        this.potentiallyScrubbing = false;
-        if (this.wasPlayingWhenScrubbingStarted &amp;&amp; this.video.paused)
</del><ins>+        this._potentiallyScrubbing = false;
+        if (this.wasPlayingWhenScrubbingStarted &amp;&amp; this.video.paused) {
</ins><span class="cx">             this.video.play();
</span><ins>+            this.resetHideControlsTimer();
+        }
</ins><span class="cx">     },
</span><span class="cx"> 
</span><span class="cx">     handleReadyStateChange: function(event) {
</span></span></pre>
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