Make IPC::Channel::Listener:OnMessageReceived have a return value indicating ...

ppapi/proxy/ppb_graphics_2d_proxy.h

 // Copyright (c) 2010 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 PPAPI_PPB_GRAPHICS_2D_PROXY_H_
 #define PPAPI_PPB_GRAPHICS_2D_PROXY_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_module.h"
@@ skipping 17 matching lines @@
   PPB_Graphics2D_Proxy(Dispatcher* dispatcher, const void* target_interface);
   virtual ~PPB_Graphics2D_Proxy();
 
   const PPB_Graphics2D* ppb_graphics_2d_target() const {
     return static_cast<const PPB_Graphics2D*>(target_interface());
   }
 
   // InterfaceProxy implementation.
   virtual const void* GetSourceInterface() const;
   virtual InterfaceID GetInterfaceId() const;
-  virtual void OnMessageReceived(const IPC::Message& msg);
+  virtual bool OnMessageReceived(const IPC::Message& msg);
 
  private:
   // Plugin->renderer message handlers.
   void OnMsgCreate(PP_Module module,
                    const PP_Size& size,
                    PP_Bool is_always_opaque,
                    PP_Resource* result);
   void OnMsgPaintImageData(PP_Resource graphics_2d,
                            PP_Resource image_data,
                            const PP_Point& top_left,
@@ skipping 14 matching lines @@
   void SendFlushACKToPlugin(int32_t result, PP_Resource graphics_2d);
 
   CompletionCallbackFactory<PPB_Graphics2D_Proxy,
                             ProxyNonThreadSafeRefCount> callback_factory_;
 };
 
 }  // namespace proxy
 }  // namespace pp
 
 #endif  // PPAPI_PPB_GRAPHICS_2D_PROXY_H_