Cancel GPU acceleration for 2D canvas when drawing very large images

third_party/WebKit/Source/core/frame/ImageBitmap.h

Index: third_party/WebKit/Source/core/frame/ImageBitmap.h
diff --git a/third_party/WebKit/Source/core/frame/ImageBitmap.h b/third_party/WebKit/Source/core/frame/ImageBitmap.h
index d61c4183fe9d4810e69174f60f551b1c57c50da8..384fbadb098010556955d49cbbf60c19fc46d951 100644
--- a/third_party/WebKit/Source/core/frame/ImageBitmap.h
+++ b/third_party/WebKit/Source/core/frame/ImageBitmap.h
@@ -68,7 +68,6 @@ public:
     bool isPremultiplied() const { return m_image->isPremultiplied(); }
     PassRefPtr<StaticBitmapImage> transfer();
     void close();
-    bool isTextureBacked() const;
 
     ~ImageBitmap() override;
 
@@ -80,6 +79,7 @@ public:
     bool isImageBitmap() const override { return true; }
     int sourceWidth() override { return m_image ? m_image->width() : 0; }
     int sourceHeight() override { return m_image ? m_image->height() : 0; }
+    bool isAccelerated() const override;
 
     // ImageBitmapSource implementation
     IntSize bitmapSourceSize() const override { return size(); }