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

Source/platform/graphics/ImageFrameGeneratorTest.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 203 matching lines @@
     EXPECT_EQ(1, m_frameBufferRequestCount);
     EXPECT_EQ(0, m_decodersDestroyed);
     ImageDecodingStore::instance()->unlockCache(m_generator.get(), tempImage);
     EXPECT_EQ(2, ImageDecodingStore::instance()->cacheEntries());
     EXPECT_EQ(1, ImageDecodingStore::instance()->imageCacheEntries());
     EXPECT_EQ(1, ImageDecodingStore::instance()->decoderCacheEntries());
 
     // LocalFrame can now be decoded completely.
     setFrameStatus(ImageFrame::FrameComplete);
     addNewData();
-    OwnPtr<blink::WebThread> thread = adoptPtr(blink::Platform::current()->createThread("DecodeThread"));
+    OwnPtr<WebThread> thread = adoptPtr(Platform::current()->createThread("DecodeThread"));
     thread->postTask(new Task(WTF::bind(&decodeThreadMain, m_generator.get())));
     thread.clear();
 
     EXPECT_EQ(2, m_frameBufferRequestCount);
     EXPECT_EQ(1, m_decodersDestroyed);
     EXPECT_EQ(2, ImageDecodingStore::instance()->cacheEntries());
     EXPECT_EQ(2, ImageDecodingStore::instance()->imageCacheEntries());
     EXPECT_EQ(0, ImageDecodingStore::instance()->decoderCacheEntries());
 
     tempImage = m_generator->decodeAndScale(fullSize());
@@ skipping 91 matching lines @@
             // We have tested failures of all stages. This time all allocations
             // were successful.
             EXPECT_TRUE(image);
             break;
         }
         EXPECT_FALSE(image);
     }
 }
 
 } // namespace blink