Cleanup namespace usage in platform/graphics/[filters/* to skia/*] and platform/graphics/[B-D]*

Source/platform/graphics/BitmapImage.h

Index: Source/platform/graphics/BitmapImage.h
diff --git a/Source/platform/graphics/BitmapImage.h b/Source/platform/graphics/BitmapImage.h
index d59a84dc94bf64d178ba373067f93c2dcb690388..05dede74aa9d935cb464bf056337a8273829b256 100644
--- a/Source/platform/graphics/BitmapImage.h
+++ b/Source/platform/graphics/BitmapImage.h
@@ -103,8 +103,8 @@ protected:
     BitmapImage(PassRefPtr<NativeImageSkia>, ImageObserver* = 0);
     BitmapImage(ImageObserver* = 0);
 
-    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, blink::WebBlendMode) OVERRIDE;
-    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, blink::WebBlendMode, RespectImageOrientationEnum) OVERRIDE;
+    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, WebBlendMode) OVERRIDE;
+    virtual void draw(GraphicsContext*, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator, WebBlendMode, RespectImageOrientationEnum) OVERRIDE;
 
     size_t currentFrame() const { return m_currentFrame; }
     size_t frameCount();
@@ -191,6 +191,6 @@ protected:
 
 DEFINE_IMAGE_TYPE_CASTS(BitmapImage);
 
-}
+} // namespace blink
 
 #endif