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

Source/platform/graphics/GraphicsContextState.h

Index: Source/platform/graphics/GraphicsContextState.h
diff --git a/Source/platform/graphics/GraphicsContextState.h b/Source/platform/graphics/GraphicsContextState.h
index 8ad9d613f16a62f848d889a2344fee38ba9b92c9..c465f39d844065827391ef9beb7e4212beb47a38 100644
--- a/Source/platform/graphics/GraphicsContextState.h
+++ b/Source/platform/graphics/GraphicsContextState.h
@@ -37,7 +37,6 @@
 #include "platform/graphics/StrokeData.h"
 #include "platform/graphics/skia/SkiaUtils.h"
 #include "third_party/skia/include/core/SkColorFilter.h"
-#include "third_party/skia/include/core/SkImageFilter.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefPtr.h"
@@ -108,22 +107,17 @@ public:
     void setDrawLooper(PassRefPtr<SkDrawLooper>);
     void clearDrawLooper();
 
-    SkImageFilter* dropShadowImageFilter() const { return m_dropShadowImageFilter.get(); }
-    void setDropShadowImageFilter(PassRefPtr<SkImageFilter>);
-    void clearDropShadowImageFilter();
-
     // Text. (See TextModeFill & friends.)
     TextDrawingModeFlags textDrawingMode() const { return m_textDrawingMode; }
     void setTextDrawingMode(TextDrawingModeFlags mode) { m_textDrawingMode = mode; }
 
     // Common shader state.
     int alpha() const { return m_alpha; }
-    void setAlphaAsFloat(float);
 
     SkColorFilter* colorFilter() const { return m_colorFilter.get(); }
     void setColorFilter(PassRefPtr<SkColorFilter>);
 
-    // Compositing control, for the CSS and Canvas compositing spec.
+    // Compositing control, for the CSS spec.
     void setCompositeOperation(SkXfermode::Mode);
     SkXfermode::Mode compositeOperation() const { return m_compositeOperation; }
 
@@ -134,9 +128,6 @@ public:
     bool shouldAntialias() const { return m_shouldAntialias; }
     void setShouldAntialias(bool);
 
-    bool shouldClampToSourceRect() const { return m_shouldClampToSourceRect; }
-    void setShouldClampToSourceRect(bool shouldClampToSourceRect) { m_shouldClampToSourceRect = shouldClampToSourceRect; }
-
 private:
     GraphicsContextState();
     explicit GraphicsContextState(const GraphicsContextState&);
@@ -165,7 +156,6 @@ private:
     RefPtr<Pattern> m_fillPattern;
 
     RefPtr<SkDrawLooper> m_looper;
-    RefPtr<SkImageFilter> m_dropShadowImageFilter;
 
     TextDrawingModeFlags m_textDrawingMode;
 
@@ -179,7 +169,6 @@ private:
     uint16_t m_saveCount;
 
     bool m_shouldAntialias : 1;
-    bool m_shouldClampToSourceRect : 1;
 };
 
 } // namespace blink