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

ppapi/proxy/ppb_cursor_control_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_cursor_control_proxy.h"
 
 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
 
@@ skipping 62 matching lines @@
 }
 
 const void* PPB_CursorControl_Proxy::GetSourceInterface() const {
   return &cursor_control_interface;
 }
 
 InterfaceID PPB_CursorControl_Proxy::GetInterfaceId() const {
   return INTERFACE_ID_PPB_CURSORCONTROL;
 }
 
-void PPB_CursorControl_Proxy::OnMessageReceived(const IPC::Message& msg) {
+bool PPB_CursorControl_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_CursorControl_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCursorControl_SetCursor,
                         OnMsgSetCursor)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCursorControl_LockCursor,
                         OnMsgLockCursor)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCursorControl_UnlockCursor,
                         OnMsgUnlockCursor)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCursorControl_HasCursorLock,
                         OnMsgHasCursorLock)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBCursorControl_CanLockCursor,
                         OnMsgCanLockCursor)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   // TODO(brettw): handle bad messages!
+  return handled;
 }
 
 void PPB_CursorControl_Proxy::OnMsgSetCursor(PP_Instance instance,
                                              int32_t type,
                                              PP_Resource custom_image,
                                              const PP_Point& hot_spot,
                                              PP_Bool* result) {
   *result = ppb_cursor_control_target()->SetCursor(
       instance, static_cast<PP_CursorType_Dev>(type), custom_image, &hot_spot);
 }
@@ skipping 13 matching lines @@
   *result = ppb_cursor_control_target()->HasCursorLock(instance);
 }
 
 void PPB_CursorControl_Proxy::OnMsgCanLockCursor(PP_Instance instance,
                                                  PP_Bool* result) {
   *result = ppb_cursor_control_target()->CanLockCursor(instance);
 }
 
 }  // namespace proxy
 }  // namespace pp