Don't destroy RenderWidgetCompositor during DoDeferredClose

cc/trees/thread_proxy.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 CC_TREES_THREAD_PROXY_H_
 #define CC_TREES_THREAD_PROXY_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 55 matching lines @@
     bool animate_requested;
     // Set only when SetNeedsCommit is called.
     bool commit_requested;
     // Set by SetNeedsAnimate, SetNeedsUpdateLayers, and SetNeedsCommit.
     bool commit_request_sent_to_impl_thread;
 
     bool started;
     bool manage_tiles_pending;
     bool can_cancel_commit;
     bool defer_commits;
+    bool host_client_finished_;
 
     RendererCapabilities renderer_capabilities_main_thread_copy;
 
     scoped_ptr<BeginMainFrameAndCommitState> pending_deferred_commit;
     base::WeakPtrFactory<ThreadProxy> weak_factory;
   };
 
   // Accessed on the main thread, or when main thread is blocked.
   struct MainThreadOrBlockedMainThread {
     explicit MainThreadOrBlockedMainThread(LayerTreeHost* host);
@@ skipping 60 matching lines @@
   };
 
   const MainThreadOnly& main() const;
   const MainThreadOrBlockedMainThread& blocked_main() const;
   const CompositorThreadOnly& impl() const;
 
   // Proxy implementation
   virtual void FinishAllRendering() OVERRIDE;
   virtual bool IsStarted() const OVERRIDE;
   virtual void SetLayerTreeHostClientReady() OVERRIDE;
+  virtual void SetLayerTreeHostClientFinished() OVERRIDE;
   virtual void SetVisible(bool visible) OVERRIDE;
   virtual const RendererCapabilities& GetRendererCapabilities() const OVERRIDE;
   virtual void SetNeedsAnimate() OVERRIDE;
   virtual void SetNeedsUpdateLayers() OVERRIDE;
   virtual void SetNeedsCommit() OVERRIDE;
   virtual void SetNeedsRedraw(const gfx::Rect& damage_rect) OVERRIDE;
   virtual void SetNextCommitWaitsForActivation() OVERRIDE;
   virtual void NotifyInputThrottledUntilCommit() OVERRIDE;
   virtual void SetDeferCommits(bool defer_commits) OVERRIDE;
   virtual bool CommitRequested() const OVERRIDE;
@@ skipping 131 matching lines @@
 
   base::WeakPtr<ThreadProxy> main_thread_weak_ptr_;
   base::WeakPtr<ThreadProxy> impl_thread_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_