Merge 167537 - Use message passing for BeginFrameAndCommitState and clean up forced commit logic

cc/thread_proxy.h

Index: cc/thread_proxy.h
===================================================================
--- cc/thread_proxy.h	(revision 168251)
+++ cc/thread_proxy.h	(working copy)
@@ -81,7 +81,6 @@
     explicit ThreadProxy(LayerTreeHost*);
     friend class ThreadProxyContextRecreationTimer;
 
-    // Set on impl thread, read on main thread.
     struct BeginFrameAndCommitState {
         BeginFrameAndCommitState();
         ~BeginFrameAndCommitState();
@@ -92,10 +91,9 @@
         PrioritizedTextureManager::BackingList evictedContentsTexturesBackings;
         size_t memoryAllocationLimitBytes;
     };
-    scoped_ptr<BeginFrameAndCommitState> m_pendingBeginFrameRequest;
 
     // Called on main thread
-    void beginFrame();
+    void beginFrame(BeginFrameAndCommitState* beginFrameState);
     void didCommitAndDrawFrame();
     void didCompleteSwapBuffers();
     void setAnimationEvents(AnimationEventsVector*, base::Time wallClockTime);
@@ -133,7 +131,6 @@
     bool m_animateRequested; // Set only when setNeedsAnimate is called.
     bool m_commitRequested; // Set only when setNeedsCommit is called.
     bool m_commitRequestSentToImplThread; // Set by setNeedsCommit and setNeedsAnimate.
-    bool m_forcedCommitRequested;
     scoped_ptr<ThreadProxyContextRecreationTimer> m_contextRecreationTimer;
     LayerTreeHost* m_layerTreeHost;
     bool m_rendererInitialized;
@@ -177,7 +174,7 @@
     size_t m_totalCommitCount;
 
     bool m_deferCommits;
-    bool m_deferredCommitPending;
+    scoped_ptr<BeginFrameAndCommitState> m_pendingDeferredCommit;
 };
 
 }  // namespace cc