Chromium compositor change implementing page-scale driven pinch-zoom.

cc/CCThreadProxy.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 CCThreadProxy_h
 #define CCThreadProxy_h
 
 #include "CCAnimationEvents.h"
 #include "CCCompletionEvent.h"
 #include "CCLayerTreeHostImpl.h"
@@ skipping 68 matching lines @@
     explicit CCThreadProxy(CCLayerTreeHost*);
     friend class CCThreadProxyContextRecreationTimer;
 
     // Set on impl thread, read on main thread.
     struct BeginFrameAndCommitState {
         BeginFrameAndCommitState();
         ~BeginFrameAndCommitState();
 
         double monotonicFrameBeginTime;
         OwnPtr<CCScrollAndScaleSet> scrollInfo;
+        WebKit::WebTransformationMatrix implTransform;
         CCPrioritizedTextureManager::BackingVector evictedContentsTexturesBackings;
         size_t memoryAllocationLimitBytes;
     };
     OwnPtr<BeginFrameAndCommitState> m_pendingBeginFrameRequest;
 
     // Called on main thread
     void beginFrame();
     void didCommitAndDrawFrame();
     void didCompleteSwapBuffers();
     void setAnimationEvents(PassOwnPtr<CCAnimationEventsVector>, double wallClockTime);
@@ skipping 72 matching lines @@
 
     // Set when the next draw should post didCommitAndDrawFrame to the main thread.
     bool m_nextFrameIsNewlyCommittedFrameOnImplThread;
 
     bool m_renderVSyncEnabled;
 };
 
 }
 
 #endif