Remove static thread pointers from CC

cc/layer_tree_host_impl.h

 // Copyright 2011 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 CCLayerTreeHostImpl_h
 #define CCLayerTreeHostImpl_h
 
 #include "CCAnimationEvents.h"
 #include "CCInputHandler.h"
 #include "CCLayerSorter.h"
@@ skipping 258 matching lines @@
     // Exposed for testing.
     void calculateRenderSurfaceLayerList(CCLayerList&);
 
     // Virtual for testing.
     virtual void animateLayers(double monotonicTime, double wallClockTime);
 
     // Virtual for testing.
     virtual base::TimeDelta lowFrequencyAnimationInterval() const;
 
     CCLayerTreeHostImplClient* m_client;
+    CCProxy* m_proxy;
     int m_sourceFrameNumber;
 
 private:
     void computeDoubleTapZoomDeltas(CCScrollAndScaleSet* scrollInfo);
     void computePinchZoomDeltas(CCScrollAndScaleSet* scrollInfo);
     void makeScrollAndScaleSet(CCScrollAndScaleSet* scrollInfo, const IntSize& scrollOffset, float pageScale);
 
     void setPageScaleDelta(float);
     void updateMaxScrollPosition();
     void trackDamageForAllSurfaces(CCLayerImpl* rootDrawLayer, const CCLayerList& renderSurfaceLayerList);
@@ skipping 58 matching lines @@
 
     size_t m_numImplThreadScrolls;
     size_t m_numMainThreadScrolls;
 
     DISALLOW_COPY_AND_ASSIGN(CCLayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif