Rename WebCore namespace to blink in Platform

Source/platform/graphics/gpu/DrawingBufferTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "platform/graphics/UnacceleratedImageBufferSurface.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "platform/graphics/test/MockWebGraphicsContext3D.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebExternalTextureMailbox.h"
 #include "wtf/RefPtr.h"
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
-using namespace WebCore;
+using namespace blink;
 using namespace blink;
 using testing::Test;
 using testing::_;
 
 namespace {
 
 class FakeContextEvictionManager : public ContextEvictionManager {
 public:
     void forciblyLoseOldestContext(const String& reason) { }
     IntSize oldestContextSize() { return IntSize(); }
@@ skipping 560 matching lines @@
         } else {
             EXPECT_EQ(0u, trackingContext->stencilAttachment());
             EXPECT_EQ(0u, trackingContext->depthAttachment());
         }
 
         drawingBuffer->beginDestruction();
     }
 }
 
 } // namespace