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

ppapi/proxy/ppb_instance_proxy.cc

 // 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.
 
 #include "ppapi/proxy/ppb_instance_proxy.h"
 
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_instance.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 66 matching lines @@
 }
 
 const void* PPB_Instance_Proxy::GetSourceInterface() const {
   return &instance_interface;
 }
 
 InterfaceID PPB_Instance_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_INSTANCE;
 }
 
-void PPB_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
+bool PPB_Instance_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Instance_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetWindowObject,
                         OnMsgGetWindowObject)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_GetOwnerElementObject,
                         OnMsgGetOwnerElementObject)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_BindGraphics,
                         OnMsgBindGraphics)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_IsFullFrame,
                         OnMsgIsFullFrame)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBInstance_ExecuteScript,
                         OnMsgExecuteScript)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void PPB_Instance_Proxy::OnMsgGetWindowObject(
     PP_Instance instance,
     SerializedVarReturnValue result) {
   result.Return(dispatcher(),
                 ppb_instance_target()->GetWindowObject(instance));
 }
 
 void PPB_Instance_Proxy::OnMsgGetOwnerElementObject(
@@ skipping 20 matching lines @@
     SerializedVarOutParam out_exception,
     SerializedVarReturnValue result) {
   result.Return(dispatcher(), ppb_instance_target()->ExecuteScript(
       instance,
       script.Get(dispatcher()),
       out_exception.OutParam(dispatcher())));
 }
 
 }  // namespace proxy
 }  // namespace pp