Fix a rendering bug when frames have no dirty rect on display list mode.

Source/platform/graphics/RecordingImageBufferSurface.h

 // 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.
 
 #ifndef RecordingImageBufferSurface_h
 #define RecordingImageBufferSurface_h
 
 #include "platform/graphics/ImageBufferSurface.h"
 #include "public/platform/WebThread.h"
 #include "third_party/skia/include/core/SkCanvas.h"
@@ skipping 27 matching lines @@
 private:
     struct StateRec {
     public:
         SkMatrix m_ctm;
         // FIXME: handle transferring non-rectangular clip to the new frame, crbug.com/392614
         SkIRect m_clip;
     };
     typedef LinkedStack<StateRec> StateStack;
     friend class ::RecordingImageBufferSurfaceTest; // for unit testing
     void fallBackToRasterCanvas();
-    void initializeCurrentFrame();
+    bool initializeCurrentFrame();
     bool finalizeFrameInternal();
 
     // saves current clip and transform matrix of canvas
     bool saveState(SkCanvas*, StateStack*);
     // we should make sure that we can transfer state in saveState
     void setCurrentState(SkCanvas*, StateStack*);
 
     OwnPtr<SkPictureRecorder> m_currentFrame;
     RefPtr<SkPicture> m_previousFrame;
     OwnPtr<SkCanvas> m_rasterCanvas;
     ImageBuffer* m_imageBuffer;
     int m_initialSaveCount;
     bool m_frameWasCleared;
 };
 
 } // namespace blink
 
 #endif