Rename WebCore namespace to blink in Platform

Source/platform/graphics/gpu/WebGLImageBufferSurface.h

Index: Source/platform/graphics/gpu/WebGLImageBufferSurface.h
diff --git a/Source/platform/graphics/gpu/WebGLImageBufferSurface.h b/Source/platform/graphics/gpu/WebGLImageBufferSurface.h
index a148e907be0e22e6c8da0dd857e4b663595bc431..5a6a794fd7f4f95c7ee528addbba3ce66eb5e3ad 100644
--- a/Source/platform/graphics/gpu/WebGLImageBufferSurface.h
+++ b/Source/platform/graphics/gpu/WebGLImageBufferSurface.h
@@ -39,7 +39,7 @@ namespace blink {
 class WebGraphicsContext3DProvider;
 }
 
-namespace WebCore {
+namespace blink {
 
 // This is a GPU backed surface that has no canvas or render target.
 class PLATFORM_EXPORT WebGLImageBufferSurface : public ImageBufferSurface {
@@ -67,6 +67,6 @@ private:
 };
 
 
-} // namespace WebCore
+} // namespace blink
 
 #endif