Rename WebKit namespace to blink

Source/core/platform/graphics/ImageBuffer.h

Index: Source/core/platform/graphics/ImageBuffer.h
diff --git a/Source/core/platform/graphics/ImageBuffer.h b/Source/core/platform/graphics/ImageBuffer.h
index 3be9600e55d3d4c320abbc056591edc5faeab868..52da4fb85583669f4d72b7c6552e6cbf0cfa9497 100644
--- a/Source/core/platform/graphics/ImageBuffer.h
+++ b/Source/core/platform/graphics/ImageBuffer.h
@@ -45,7 +45,7 @@
 
 class SkCanvas;
 
-namespace WebKit { class WebLayer; }
+namespace blink { class WebLayer; }
 
 namespace WebCore {
 
@@ -118,7 +118,7 @@ public:
     String toDataURL(const String& mimeType, const double* quality = 0, CoordinateSystem = LogicalCoordinateSystem) const;
     AffineTransform baseTransform() const { return AffineTransform(); }
     void transformColorSpace(ColorSpace srcColorSpace, ColorSpace dstColorSpace);
-    WebKit::WebLayer* platformLayer() const;
+    blink::WebLayer* platformLayer() const;
 
     // FIXME: current implementations of this method have the restriction that they only work
     // with textures that are RGB or RGBA format, UNSIGNED_BYTE type and level 0, as specified in