[Webkit-unassigned] [Bug 280357] New: ASSERT under PluginView::paint() since it unnecessarily accesses a platform context from DisplayListRecorder

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=280357

            Bug ID: 280357
           Summary: ASSERT under PluginView::paint() since it
                    unnecessarily accesses a platform context from
                    DisplayListRecorder
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: a_protyasha at apple.com
                CC: a_protyasha at apple.com,
                    webkit-bug-importer at group.apple.com

Abridged crash trace:

```
Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   WebKit                                     0x11816c10c WTFCrashWithInfo(int, char const*, char const*, int) + 132 (Assertions.h:890)
1   WebKit                                     0x11aed0b4c WebCore::DisplayList::Recorder::platformContext() const + 104 (DisplayListRecorder.h:196)
2   WebKit                                     0x11b3f9dd0 WebKit::PluginView::paint(WebCore::GraphicsContext&, WebCore::IntRect const&, WebCore::Widget::SecurityOriginPaintPolicy, WebCore::RegionContext*) + 328 (PluginView.cpp:546)
3   WebCore                                    0x306a9a0d8 WebCore::RenderWidget::paintContents(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 968 (RenderWidget.cpp:277)
4   WebCore                                    0x306a9a86c WebCore::RenderWidget::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 896 (RenderWidget.cpp:337)
5   WebCore                                    0x306893574 WebCore::RenderEmbeddedObject::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) + 300 (RenderEmbeddedObject.cpp:230)
6   WebCore                                    0x306920f2c WebCore::RenderLayer::paintForegroundForFragmentsWithPhase(WebCore::PaintPhase, WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*) + 676 (RenderLayer.cpp:3935)
7   WebCore                                    0x30691ef0c WebCore::RenderLayer::paintForegroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc> const&, WebCore::GraphicsContext&, WebCore::GraphicsContext&, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*) + 1320 (RenderLayer.cpp:3912)
```

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