aura: fix hang when the content window is removed from the tree while a swap is pending

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 2012 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #pragma once
 
 #include <map>
 #include <vector>
@@ skipping 187 matching lines @@
   void ModifyEventMovementAndCoords(WebKit::WebMouseEvent* event);
 
   // If |clip| is non-empty and and doesn't contain |rect| or |clip| is empty
   // SchedulePaint() is invoked for |rect|.
   void SchedulePaintIfNotInClip(const gfx::Rect& rect, const gfx::Rect& clip);
 
   // Helper method to determine if, in mouse locked mode, the cursor should be
   // moved to center.
   bool ShouldMoveToCenter();
 
+  // Run the compositing callbacks.
+  void RunCompositingCallbacks();
+
+  // Called when window_ is removed from the window tree.
+  void RemovingFromRootWindow();
+
   ui::Compositor* GetCompositor();
 
   // The model object.
   content::RenderWidgetHostImpl* host_;
 
   aura::Window* window_;
 
   scoped_ptr<WindowObserver> window_observer_;
 
   // Is this a fullscreen view?
@@ skipping 62 matching lines @@
   bool needs_update_texture_;
 
   // Used to prevent further resizes while a resize is pending.
   class ResizeLock;
   std::vector<linked_ptr<ResizeLock> > resize_locks_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_