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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/180268">180268</a></dd>
<dt>Author</dt> <dd>akling@apple.com</dd>
<dt>Date</dt> <dd>2015-02-18 09:52:17 -0800 (Wed, 18 Feb 2015)</dd>
</dl>

<h3>Log Message</h3>
<pre>Purge PassRefPtr from CanvasRenderingContext2D.
&lt;https://webkit.org/b/141749&gt;

Reviewed by Gyuyoung Kim.

Switch from using PassRefPtr to RefPtr/Ref in CanvasRenderingContext2D.

* html/TextMetrics.h:
(WebCore::TextMetrics::create): Changed create() helper to return Ref.

* html/canvas/CanvasRenderingContext2D.h:
* html/canvas/CanvasRenderingContext2D.cpp:
(WebCore::CanvasRenderingContext2D::prepareGradientForDashboard): Changed to take a reference.

(WebCore::CanvasRenderingContext2D::createLinearGradient):
(WebCore::CanvasRenderingContext2D::createRadialGradient):
(WebCore::CanvasRenderingContext2D::createPattern):
(WebCore::createEmptyImageData):
(WebCore::CanvasRenderingContext2D::createImageData):
(WebCore::CanvasRenderingContext2D::getImageData):
(WebCore::CanvasRenderingContext2D::webkitGetImageDataHD): Made these return RefPtr. Also did
a bunch of 0 -&gt; nullptr conversion, removed a bunch of unnecessary RefPtr::release() calls,
and changed a PassRefPtr argument to RefPtr&amp;&amp;.

(WebCore::CanvasRenderingContext2D::measureText): Made this return Ref.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorehtmlTextMetricsh">trunk/Source/WebCore/html/TextMetrics.h</a></li>
<li><a href="#trunkSourceWebCorehtmlcanvasCanvasRenderingContext2Dcpp">trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp</a></li>
<li><a href="#trunkSourceWebCorehtmlcanvasCanvasRenderingContext2Dh">trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.h</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (180267 => 180268)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2015-02-18 17:34:50 UTC (rev 180267)
+++ trunk/Source/WebCore/ChangeLog        2015-02-18 17:52:17 UTC (rev 180268)
</span><span class="lines">@@ -1,3 +1,31 @@
</span><ins>+2015-02-18  Andreas Kling  &lt;akling@apple.com&gt;
+
+        Purge PassRefPtr from CanvasRenderingContext2D.
+        &lt;https://webkit.org/b/141749&gt;
+
+        Reviewed by Gyuyoung Kim.
+
+        Switch from using PassRefPtr to RefPtr/Ref in CanvasRenderingContext2D.
+
+        * html/TextMetrics.h:
+        (WebCore::TextMetrics::create): Changed create() helper to return Ref.
+
+        * html/canvas/CanvasRenderingContext2D.h:
+        * html/canvas/CanvasRenderingContext2D.cpp:
+        (WebCore::CanvasRenderingContext2D::prepareGradientForDashboard): Changed to take a reference.
+
+        (WebCore::CanvasRenderingContext2D::createLinearGradient):
+        (WebCore::CanvasRenderingContext2D::createRadialGradient):
+        (WebCore::CanvasRenderingContext2D::createPattern):
+        (WebCore::createEmptyImageData):
+        (WebCore::CanvasRenderingContext2D::createImageData):
+        (WebCore::CanvasRenderingContext2D::getImageData):
+        (WebCore::CanvasRenderingContext2D::webkitGetImageDataHD): Made these return RefPtr. Also did
+        a bunch of 0 -&gt; nullptr conversion, removed a bunch of unnecessary RefPtr::release() calls,
+        and changed a PassRefPtr argument to RefPtr&amp;&amp;.
+
+        (WebCore::CanvasRenderingContext2D::measureText): Made this return Ref.
+
</ins><span class="cx"> 2015-02-18  Commit Queue  &lt;commit-queue@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Unreviewed, rolling out r180260.
</span></span></pre></div>
<a id="trunkSourceWebCorehtmlTextMetricsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/html/TextMetrics.h (180267 => 180268)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/html/TextMetrics.h        2015-02-18 17:34:50 UTC (rev 180267)
+++ trunk/Source/WebCore/html/TextMetrics.h        2015-02-18 17:52:17 UTC (rev 180268)
</span><span class="lines">@@ -26,14 +26,14 @@
</span><span class="cx"> #ifndef TextMetrics_h
</span><span class="cx"> #define TextMetrics_h
</span><span class="cx"> 
</span><del>-#include &lt;wtf/PassRefPtr.h&gt;
</del><ins>+#include &lt;wtf/Ref.h&gt;
</ins><span class="cx"> #include &lt;wtf/RefCounted.h&gt;
</span><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><span class="cx"> class TextMetrics : public RefCounted&lt;TextMetrics&gt; {
</span><span class="cx"> public:
</span><del>-    static PassRefPtr&lt;TextMetrics&gt; create() { return adoptRef(new TextMetrics); }
</del><ins>+    static Ref&lt;TextMetrics&gt; create() { return adoptRef(*new TextMetrics); }
</ins><span class="cx"> 
</span><span class="cx">     float width() const { return m_width; }
</span><span class="cx">     void setWidth(float w) { m_width = w; }
</span></span></pre></div>
<a id="trunkSourceWebCorehtmlcanvasCanvasRenderingContext2Dcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp (180267 => 180268)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp        2015-02-18 17:34:50 UTC (rev 180267)
+++ trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.cpp        2015-02-18 17:52:17 UTC (rev 180268)
</span><span class="lines">@@ -1699,65 +1699,65 @@
</span><span class="cx">     compositeBuffer(buffer.get(), bufferRect, op);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-void CanvasRenderingContext2D::prepareGradientForDashboard(CanvasGradient* gradient) const
</del><ins>+void CanvasRenderingContext2D::prepareGradientForDashboard(CanvasGradient&amp; gradient) const
</ins><span class="cx"> {
</span><span class="cx"> #if ENABLE(DASHBOARD_SUPPORT)
</span><span class="cx">     if (m_usesDashboardCompatibilityMode)
</span><del>-        gradient-&gt;setDashboardCompatibilityMode();
</del><ins>+        gradient.setDashboardCompatibilityMode();
</ins><span class="cx"> #else
</span><span class="cx">     UNUSED_PARAM(gradient);
</span><span class="cx"> #endif
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;CanvasGradient&gt; CanvasRenderingContext2D::createLinearGradient(float x0, float y0, float x1, float y1, ExceptionCode&amp; ec)
</del><ins>+RefPtr&lt;CanvasGradient&gt; CanvasRenderingContext2D::createLinearGradient(float x0, float y0, float x1, float y1, ExceptionCode&amp; ec)
</ins><span class="cx"> {
</span><span class="cx">     if (!std::isfinite(x0) || !std::isfinite(y0) || !std::isfinite(x1) || !std::isfinite(y1)) {
</span><span class="cx">         ec = NOT_SUPPORTED_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><del>-    RefPtr&lt;CanvasGradient&gt; gradient = CanvasGradient::create(FloatPoint(x0, y0), FloatPoint(x1, y1));
</del><ins>+    Ref&lt;CanvasGradient&gt; gradient = CanvasGradient::create(FloatPoint(x0, y0), FloatPoint(x1, y1));
</ins><span class="cx">     prepareGradientForDashboard(gradient.get());
</span><del>-    return gradient.release();
</del><ins>+    return WTF::move(gradient);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;CanvasGradient&gt; CanvasRenderingContext2D::createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1, ExceptionCode&amp; ec)
</del><ins>+RefPtr&lt;CanvasGradient&gt; CanvasRenderingContext2D::createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1, ExceptionCode&amp; ec)
</ins><span class="cx"> {
</span><span class="cx">     if (!std::isfinite(x0) || !std::isfinite(y0) || !std::isfinite(r0) || !std::isfinite(x1) || !std::isfinite(y1) || !std::isfinite(r1)) {
</span><span class="cx">         ec = NOT_SUPPORTED_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     if (r0 &lt; 0 || r1 &lt; 0) {
</span><span class="cx">         ec = INDEX_SIZE_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><del>-    RefPtr&lt;CanvasGradient&gt; gradient = CanvasGradient::create(FloatPoint(x0, y0), r0, FloatPoint(x1, y1), r1);
</del><ins>+    Ref&lt;CanvasGradient&gt; gradient = CanvasGradient::create(FloatPoint(x0, y0), r0, FloatPoint(x1, y1), r1);
</ins><span class="cx">     prepareGradientForDashboard(gradient.get());
</span><del>-    return gradient.release();
</del><ins>+    return WTF::move(gradient);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;CanvasPattern&gt; CanvasRenderingContext2D::createPattern(HTMLImageElement* image,
</del><ins>+RefPtr&lt;CanvasPattern&gt; CanvasRenderingContext2D::createPattern(HTMLImageElement* image,
</ins><span class="cx">     const String&amp; repetitionType, ExceptionCode&amp; ec)
</span><span class="cx"> {
</span><span class="cx">     if (!image) {
</span><span class="cx">         ec = TYPE_MISMATCH_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx">     bool repeatX, repeatY;
</span><span class="cx">     ec = 0;
</span><span class="cx">     CanvasPattern::parseRepetitionType(repetitionType, repeatX, repeatY, ec);
</span><span class="cx">     if (ec)
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx"> 
</span><span class="cx">     if (!image-&gt;complete())
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx"> 
</span><span class="cx">     CachedImage* cachedImage = image-&gt;cachedImage();
</span><span class="cx">     if (!cachedImage || cachedImage-&gt;status() == CachedResource::LoadError) {
</span><span class="cx">         ec = INVALID_STATE_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     if (!image-&gt;cachedImage()-&gt;imageForRenderer(image-&gt;renderer()))
</span><span class="lines">@@ -1767,23 +1767,23 @@
</span><span class="cx">     return CanvasPattern::create(cachedImage-&gt;imageForRenderer(image-&gt;renderer()), repeatX, repeatY, originClean);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;CanvasPattern&gt; CanvasRenderingContext2D::createPattern(HTMLCanvasElement* canvas,
</del><ins>+RefPtr&lt;CanvasPattern&gt; CanvasRenderingContext2D::createPattern(HTMLCanvasElement* canvas,
</ins><span class="cx">     const String&amp; repetitionType, ExceptionCode&amp; ec)
</span><span class="cx"> {
</span><span class="cx">     if (!canvas) {
</span><span class="cx">         ec = TYPE_MISMATCH_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx">     if (!canvas-&gt;width() || !canvas-&gt;height() || !canvas-&gt;buffer()) {
</span><span class="cx">         ec = INVALID_STATE_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     bool repeatX, repeatY;
</span><span class="cx">     ec = 0;
</span><span class="cx">     CanvasPattern::parseRepetitionType(repetitionType, repeatX, repeatY, ec);
</span><span class="cx">     if (ec)
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     return CanvasPattern::create(canvas-&gt;copiedImage(), repeatX, repeatY, canvas-&gt;originClean());
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -1841,41 +1841,41 @@
</span><span class="cx">     return canvas()-&gt;drawingContext();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-static PassRefPtr&lt;ImageData&gt; createEmptyImageData(const IntSize&amp; size)
</del><ins>+static RefPtr&lt;ImageData&gt; createEmptyImageData(const IntSize&amp; size)
</ins><span class="cx"> {
</span><span class="cx">     if (RefPtr&lt;ImageData&gt; data = ImageData::create(size)) {
</span><span class="cx">         data-&gt;data()-&gt;zeroFill();
</span><del>-        return data.release();
</del><ins>+        return data;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     return nullptr;
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;ImageData&gt; CanvasRenderingContext2D::createImageData(PassRefPtr&lt;ImageData&gt; imageData, ExceptionCode&amp; ec) const
</del><ins>+RefPtr&lt;ImageData&gt; CanvasRenderingContext2D::createImageData(RefPtr&lt;ImageData&gt;&amp;&amp; imageData, ExceptionCode&amp; ec) const
</ins><span class="cx"> {
</span><span class="cx">     if (!imageData) {
</span><span class="cx">         ec = NOT_SUPPORTED_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     return createEmptyImageData(imageData-&gt;size());
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;ImageData&gt; CanvasRenderingContext2D::createImageData(float sw, float sh, ExceptionCode&amp; ec) const
</del><ins>+RefPtr&lt;ImageData&gt; CanvasRenderingContext2D::createImageData(float sw, float sh, ExceptionCode&amp; ec) const
</ins><span class="cx"> {
</span><span class="cx">     ec = 0;
</span><span class="cx">     if (!sw || !sh) {
</span><span class="cx">         ec = INDEX_SIZE_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx">     if (!std::isfinite(sw) || !std::isfinite(sh)) {
</span><span class="cx">         ec = TypeError;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     FloatSize logicalSize(fabs(sw), fabs(sh));
</span><span class="cx">     if (!logicalSize.isExpressibleAsIntSize())
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx"> 
</span><span class="cx">     IntSize size = expandedIntSize(logicalSize);
</span><span class="cx">     if (size.width() &lt; 1)
</span><span class="lines">@@ -1886,32 +1886,32 @@
</span><span class="cx">     return createEmptyImageData(size);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;ImageData&gt; CanvasRenderingContext2D::getImageData(float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</del><ins>+RefPtr&lt;ImageData&gt; CanvasRenderingContext2D::getImageData(float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</ins><span class="cx"> {
</span><span class="cx">     return getImageData(ImageBuffer::LogicalCoordinateSystem, sx, sy, sw, sh, ec);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;ImageData&gt; CanvasRenderingContext2D::webkitGetImageDataHD(float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</del><ins>+RefPtr&lt;ImageData&gt; CanvasRenderingContext2D::webkitGetImageDataHD(float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</ins><span class="cx"> {
</span><span class="cx">     return getImageData(ImageBuffer::BackingStoreCoordinateSystem, sx, sy, sw, sh, ec);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;ImageData&gt; CanvasRenderingContext2D::getImageData(ImageBuffer::CoordinateSystem coordinateSystem, float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</del><ins>+RefPtr&lt;ImageData&gt; CanvasRenderingContext2D::getImageData(ImageBuffer::CoordinateSystem coordinateSystem, float sx, float sy, float sw, float sh, ExceptionCode&amp; ec) const
</ins><span class="cx"> {
</span><span class="cx">     if (!canvas()-&gt;originClean()) {
</span><span class="cx">         DEPRECATED_DEFINE_STATIC_LOCAL(String, consoleMessage, (ASCIILiteral(&quot;Unable to get image data from canvas because the canvas has been tainted by cross-origin data.&quot;)));
</span><span class="cx">         canvas()-&gt;document().addConsoleMessage(MessageSource::Security, MessageLevel::Error, consoleMessage);
</span><span class="cx">         ec = SECURITY_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     if (!sw || !sh) {
</span><span class="cx">         ec = INDEX_SIZE_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx">     if (!std::isfinite(sx) || !std::isfinite(sy) || !std::isfinite(sw) || !std::isfinite(sh)) {
</span><span class="cx">         ec = NOT_SUPPORTED_ERR;
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     if (sw &lt; 0) {
</span><span class="lines">@@ -1929,7 +1929,7 @@
</span><span class="cx">     if (logicalRect.height() &lt; 1)
</span><span class="cx">         logicalRect.setHeight(1);
</span><span class="cx">     if (!logicalRect.isExpressibleAsIntRect())
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx"> 
</span><span class="cx">     IntRect imageDataRect = enclosingIntRect(logicalRect);
</span><span class="cx">     ImageBuffer* buffer = canvas()-&gt;buffer();
</span><span class="lines">@@ -1938,7 +1938,7 @@
</span><span class="cx"> 
</span><span class="cx">     RefPtr&lt;Uint8ClampedArray&gt; byteArray = buffer-&gt;getUnmultipliedImageData(imageDataRect, coordinateSystem);
</span><span class="cx">     if (!byteArray)
</span><del>-        return 0;
</del><ins>+        return nullptr;
</ins><span class="cx"> 
</span><span class="cx">     return ImageData::create(imageDataRect.size(), byteArray.release());
</span><span class="cx"> }
</span><span class="lines">@@ -2257,16 +2257,16 @@
</span><span class="cx">     text = String::adopt(charVector);
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-PassRefPtr&lt;TextMetrics&gt; CanvasRenderingContext2D::measureText(const String&amp; text)
</del><ins>+Ref&lt;TextMetrics&gt; CanvasRenderingContext2D::measureText(const String&amp; text)
</ins><span class="cx"> {
</span><del>-    RefPtr&lt;TextMetrics&gt; metrics = TextMetrics::create();
</del><ins>+    Ref&lt;TextMetrics&gt; metrics = TextMetrics::create();
</ins><span class="cx"> 
</span><span class="cx">     String normalizedText = text;
</span><span class="cx">     normalizeSpaces(normalizedText);
</span><span class="cx"> 
</span><span class="cx">     metrics-&gt;setWidth(accessFont().width(TextRun(normalizedText)));
</span><span class="cx"> 
</span><del>-    return metrics.release();
</del><ins>+    return metrics;
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> void CanvasRenderingContext2D::drawTextInternal(const String&amp; text, float x, float y, bool fill, float maxWidth, bool useMaxWidth)
</span></span></pre></div>
<a id="trunkSourceWebCorehtmlcanvasCanvasRenderingContext2Dh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.h (180267 => 180268)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.h        2015-02-18 17:34:50 UTC (rev 180267)
+++ trunk/Source/WebCore/html/canvas/CanvasRenderingContext2D.h        2015-02-18 17:52:17 UTC (rev 180268)
</span><span class="lines">@@ -183,15 +183,15 @@
</span><span class="cx"> 
</span><span class="cx">     void setCompositeOperation(const String&amp;);
</span><span class="cx"> 
</span><del>-    PassRefPtr&lt;CanvasGradient&gt; createLinearGradient(float x0, float y0, float x1, float y1, ExceptionCode&amp;);
-    PassRefPtr&lt;CanvasGradient&gt; createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1, ExceptionCode&amp;);
-    PassRefPtr&lt;CanvasPattern&gt; createPattern(HTMLImageElement*, const String&amp; repetitionType, ExceptionCode&amp;);
-    PassRefPtr&lt;CanvasPattern&gt; createPattern(HTMLCanvasElement*, const String&amp; repetitionType, ExceptionCode&amp;);
</del><ins>+    RefPtr&lt;CanvasGradient&gt; createLinearGradient(float x0, float y0, float x1, float y1, ExceptionCode&amp;);
+    RefPtr&lt;CanvasGradient&gt; createRadialGradient(float x0, float y0, float r0, float x1, float y1, float r1, ExceptionCode&amp;);
+    RefPtr&lt;CanvasPattern&gt; createPattern(HTMLImageElement*, const String&amp; repetitionType, ExceptionCode&amp;);
+    RefPtr&lt;CanvasPattern&gt; createPattern(HTMLCanvasElement*, const String&amp; repetitionType, ExceptionCode&amp;);
</ins><span class="cx"> 
</span><del>-    PassRefPtr&lt;ImageData&gt; createImageData(PassRefPtr&lt;ImageData&gt;, ExceptionCode&amp;) const;
-    PassRefPtr&lt;ImageData&gt; createImageData(float width, float height, ExceptionCode&amp;) const;
-    PassRefPtr&lt;ImageData&gt; getImageData(float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
-    PassRefPtr&lt;ImageData&gt; webkitGetImageDataHD(float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
</del><ins>+    RefPtr&lt;ImageData&gt; createImageData(RefPtr&lt;ImageData&gt;&amp;&amp;, ExceptionCode&amp;) const;
+    RefPtr&lt;ImageData&gt; createImageData(float width, float height, ExceptionCode&amp;) const;
+    RefPtr&lt;ImageData&gt; getImageData(float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
+    RefPtr&lt;ImageData&gt; webkitGetImageDataHD(float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
</ins><span class="cx">     void putImageData(ImageData*, float dx, float dy, ExceptionCode&amp;);
</span><span class="cx">     void putImageData(ImageData*, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight, ExceptionCode&amp;);
</span><span class="cx">     void webkitPutImageDataHD(ImageData*, float dx, float dy, ExceptionCode&amp;);
</span><span class="lines">@@ -220,7 +220,7 @@
</span><span class="cx">     void fillText(const String&amp; text, float x, float y, float maxWidth);
</span><span class="cx">     void strokeText(const String&amp; text, float x, float y);
</span><span class="cx">     void strokeText(const String&amp; text, float x, float y, float maxWidth);
</span><del>-    PassRefPtr&lt;TextMetrics&gt; measureText(const String&amp; text);
</del><ins>+    Ref&lt;TextMetrics&gt; measureText(const String&amp; text);
</ins><span class="cx"> 
</span><span class="cx">     LineCap getLineCap() const { return state().m_lineCap; }
</span><span class="cx">     LineJoin getLineJoin() const { return state().m_lineJoin; }
</span><span class="lines">@@ -339,9 +339,9 @@
</span><span class="cx"> 
</span><span class="cx">     template&lt;class T&gt; void fullCanvasCompositedDrawImage(T*, ColorSpace, const FloatRect&amp;, const FloatRect&amp;, CompositeOperator);
</span><span class="cx"> 
</span><del>-    void prepareGradientForDashboard(CanvasGradient* gradient) const;
</del><ins>+    void prepareGradientForDashboard(CanvasGradient&amp; gradient) const;
</ins><span class="cx"> 
</span><del>-    PassRefPtr&lt;ImageData&gt; getImageData(ImageBuffer::CoordinateSystem, float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
</del><ins>+    RefPtr&lt;ImageData&gt; getImageData(ImageBuffer::CoordinateSystem, float sx, float sy, float sw, float sh, ExceptionCode&amp;) const;
</ins><span class="cx">     void putImageData(ImageData*, ImageBuffer::CoordinateSystem, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight, ExceptionCode&amp;);
</span><span class="cx"> 
</span><span class="cx">     virtual bool is2d() const override { return true; }
</span></span></pre>
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