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

chrome_frame/chrome_frame_delegate.cc

 // Copyright (c) 2009 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 "chrome_frame/chrome_frame_delegate.h"
 
 bool ChromeFrameDelegateImpl::IsTabMessage(const IPC::Message& message) {
   bool is_tab_message = true;
   IPC_BEGIN_MESSAGE_MAP(ChromeFrameDelegateImpl, message)
     IPC_MESSAGE_HANDLER_GENERIC(AutomationMsg_NavigationStateChanged, )
@@ skipping 15 matching lines @@
     IPC_MESSAGE_HANDLER_GENERIC(AutomationMsg_AttachExternalTab, )
     IPC_MESSAGE_HANDLER_GENERIC(AutomationMsg_RequestGoToHistoryEntryOffset, )
     IPC_MESSAGE_HANDLER_GENERIC(AutomationMsg_GetCookiesFromHost, )
     IPC_MESSAGE_HANDLER_GENERIC(AutomationMsg_CloseExternalTab, )
     IPC_MESSAGE_UNHANDLED(is_tab_message = false);
   IPC_END_MESSAGE_MAP()
 
   return is_tab_message;
 }
 
-void ChromeFrameDelegateImpl::OnMessageReceived(const IPC::Message& msg) {
+bool ChromeFrameDelegateImpl::OnMessageReceived(const IPC::Message& msg) {
   if (!IsValid()) {
     DLOG(WARNING) << __FUNCTION__
                   << " Msgs received for a NULL automation client instance";
-    return;
+    return false;
   }
 
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChromeFrameDelegateImpl, msg)
     IPC_MESSAGE_HANDLER(AutomationMsg_NavigationStateChanged,
                         OnNavigationStateChanged)
     IPC_MESSAGE_HANDLER(AutomationMsg_UpdateTargetUrl, OnUpdateTargetUrl)
     IPC_MESSAGE_HANDLER(AutomationMsg_HandleAccelerator,
                         OnAcceleratorPressed)
     IPC_MESSAGE_HANDLER(AutomationMsg_TabbedOut, OnTabbedOut)
     IPC_MESSAGE_HANDLER(AutomationMsg_OpenURL, OnOpenURL)
     IPC_MESSAGE_HANDLER(AutomationMsg_NavigationFailed, OnNavigationFailed)
     IPC_MESSAGE_HANDLER(AutomationMsg_DidNavigate, OnDidNavigate)
     IPC_MESSAGE_HANDLER(AutomationMsg_TabLoaded, OnLoad)
     IPC_MESSAGE_HANDLER(AutomationMsg_ForwardMessageToExternalHost,
                         OnMessageFromChromeFrame)
     IPC_MESSAGE_HANDLER(AutomationMsg_ForwardContextMenuToExternalHost,
                         OnHandleContextMenu)
     IPC_MESSAGE_HANDLER(AutomationMsg_RequestStart, OnRequestStart)
     IPC_MESSAGE_HANDLER(AutomationMsg_RequestRead, OnRequestRead)
     IPC_MESSAGE_HANDLER(AutomationMsg_RequestEnd, OnRequestEnd)
     IPC_MESSAGE_HANDLER(AutomationMsg_DownloadRequestInHost,
                         OnDownloadRequestInHost)
     IPC_MESSAGE_HANDLER(AutomationMsg_SetCookieAsync, OnSetCookieAsync)
     IPC_MESSAGE_HANDLER(AutomationMsg_AttachExternalTab, OnAttachExternalTab)
     IPC_MESSAGE_HANDLER(AutomationMsg_RequestGoToHistoryEntryOffset,
         OnGoToHistoryEntryOffset)
     IPC_MESSAGE_HANDLER(AutomationMsg_GetCookiesFromHost, OnGetCookiesFromHost)
     IPC_MESSAGE_HANDLER(AutomationMsg_CloseExternalTab, OnCloseTab)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+
+  return handled;
 }