Make SingleThreadProxy a SchedulerClient

content/renderer/render_widget.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_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 144 matching lines @@
   virtual blink::WebScreenInfo screenInfo();
   virtual float deviceScaleFactor();
   virtual void resetInputMethod();
   virtual void didHandleGestureEvent(const blink::WebGestureEvent& event,
                                      bool event_cancelled);
   virtual void showImeIfNeeded();
 
   // Begins the compositor's scheduler to start producing frames.
   void StartCompositor();
 
+  // Stop compositing.
+  void DestroyLayerTreeView();
+
   // Called when a plugin is moved.  These events are queued up and sent with
   // the next paint or scroll message to the host.
   void SchedulePluginMove(const WebPluginGeometry& move);
 
   // Called when a plugin window has been destroyed, to make sure the currently
   // pending moves don't try to reference it.
   void CleanupWindowInPluginMoves(gfx::PluginWindowHandle window);
 
   RenderWidgetCompositor* compositor() const;
 
@@ skipping 408 matching lines @@
   // Type of the input event we are currently handling.
   blink::WebInputEvent::Type handling_event_type_;
 
   // Whether we should not send ack for the current mouse move.
   bool ignore_ack_for_mouse_move_from_debugger_;
 
   // True if we have requested this widget be closed.  No more messages will
   // be sent, except for a Close.
   bool closing_;
 
+  // True if it is known that the host is in the process of being shut down.
+  bool host_closing_;
+
   // Whether this RenderWidget is currently swapped out, such that the view is
   // being rendered by another process.  If all RenderWidgets in a process are
   // swapped out, the process can exit.
   bool is_swapped_out_;
 
   // Indicates if an input method is active in the browser process.
   bool input_method_is_active_;
 
   // Stores information about the current text input.
   blink::WebTextInputInfo text_input_info_;
@@ skipping 104 matching lines @@
 
   ui::MenuSourceType context_menu_source_type_;
   gfx::Point touch_editing_context_menu_location_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_