Cleanup namespace usage in platform/graphics/[G-S]*

Source/platform/graphics/GradientGeneratedImage.cpp

Index: Source/platform/graphics/GradientGeneratedImage.cpp
diff --git a/Source/platform/graphics/GradientGeneratedImage.cpp b/Source/platform/graphics/GradientGeneratedImage.cpp
index 27308263994301605e95bc0fb34160c66607be12..8b20e225983142fd60d7d74a4e8b4b4d9947eb31 100644
--- a/Source/platform/graphics/GradientGeneratedImage.cpp
+++ b/Source/platform/graphics/GradientGeneratedImage.cpp
@@ -31,7 +31,7 @@
 
 namespace blink {
 
-void GradientGeneratedImage::draw(GraphicsContext* destContext, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator compositeOp, blink::WebBlendMode blendMode)
+void GradientGeneratedImage::draw(GraphicsContext* destContext, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator compositeOp, WebBlendMode blendMode)
 {
     GraphicsContextStateSaver stateSaver(*destContext);
     destContext->setCompositeOperation(compositeOp, blendMode);
@@ -45,7 +45,7 @@ void GradientGeneratedImage::draw(GraphicsContext* destContext, const FloatRect&
 }
 
 void GradientGeneratedImage::drawPattern(GraphicsContext* destContext, const FloatRect& srcRect, const FloatSize& scale,
-    const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& destRect, blink::WebBlendMode blendMode, const IntSize& repeatSpacing)
+    const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& destRect, WebBlendMode blendMode, const IntSize& repeatSpacing)
 {
     float stepX = srcRect.width() + repeatSpacing.width();
     float stepY = srcRect.height() + repeatSpacing.height();
@@ -99,4 +99,4 @@ void GradientGeneratedImage::drawPattern(GraphicsContext* destContext, const Flo
     }
 }
 
-}
+} // namespace blink