Clean up remaining uses of WebCore namespace

Source/platform/graphics/RecordingImageBufferSurface.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "platform/graphics/RecordingImageBufferSurface.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPictureRecorder.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 
-namespace WebCore {
+namespace blink {
 
 RecordingImageBufferSurface::RecordingImageBufferSurface(const IntSize& size, OpacityMode opacityMode)
     : ImageBufferSurface(size, opacityMode)
     , m_graphicsContext(0)
     , m_initialSaveCount(0)
     , m_frameWasCleared(true)
     , m_surfaceUsedSincePreviousFrameWasPresented(false)
 {
     initializeCurrentFrame();
 }
@@ skipping 110 matching lines @@
     initializeCurrentFrame();
 
     SkCanvas* newCanvas = m_currentFrame->getRecordingCanvas();
     newCanvas->concat(ctm);
     newCanvas->clipRect(clip);
 
     m_frameWasCleared = false;
     return true;
 }
 
-} // namespace WebCore
+} // namespace blink