Removing the dependency on GraphicsContext for drawing images in 2D canvas

Source/platform/DragImageTest.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 50 matching lines @@
     }
 
     explicit TestImage(const IntSize& size)
         : Image(0)
         , m_size(size)
     {
         m_bitmap.allocN32Pixels(size.width(), size.height());
         m_bitmap.eraseColor(SK_ColorTRANSPARENT);
     }
 
-    virtual IntSize size() const override
+    IntSize size() const override
     {
         return m_size;
     }
 
-    virtual bool bitmapForCurrentFrame(SkBitmap* bitmap) override
+    bool bitmapForCurrentFrame(SkBitmap* bitmap) override
     {
         if (m_size.isZero())
             return false;
 
         *bitmap = m_bitmap;
         return true;
     }
 
     // Stub implementations of pure virtual Image functions.
-    virtual void destroyDecodedData(bool) override
+    void destroyDecodedData(bool) override
     {
     }
 
-    virtual bool currentFrameKnownToBeOpaque() override
+    bool currentFrameKnownToBeOpaque() override
     {
         return false;
     }
 
-    void draw(GraphicsContext*, const FloatRect&, const FloatRect&, SkXfermode::Mode, RespectImageOrientationEnum) override
+    void draw(SkCanvas*, const SkPaint&, const FloatRect&, const FloatRect&, RespectImageOrientationEnum) override
     {
     }
 
 private:
 
     IntSize m_size;
 
     SkBitmap m_bitmap;
 };
 
@@ skipping 134 matching lines @@
     {
         SkAutoLockPixels lock1(dragBitmap);
         SkAutoLockPixels lock2(expectedBitmap);
         for (int x = 0; x < dragBitmap.width(); ++x)
             for (int y = 0; y < dragBitmap.height(); ++y)
                 EXPECT_EQ(expectedBitmap.getColor(x, y), dragBitmap.getColor(x, y));
     }
 }
 
 } // anonymous namespace