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

chrome/common/webmessageportchannel_impl.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/common/webmessageportchannel_impl.h"
 
 #include "chrome/common/child_process.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/worker_messages.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebString.h"
@@ skipping 162 matching lines @@
   if (MessageLoop::current() != ChildThread::current()->message_loop()) {
     DCHECK(!message->is_sync());
     ChildThread::current()->message_loop()->PostTask(FROM_HERE,
         NewRunnableMethod(this, &WebMessagePortChannelImpl::Send, message));
     return;
   }
 
   ChildThread::current()->Send(message);
 }
 
-void WebMessagePortChannelImpl::OnMessageReceived(const IPC::Message& message) {
+bool WebMessagePortChannelImpl::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebMessagePortChannelImpl, message)
     IPC_MESSAGE_HANDLER(WorkerProcessMsg_Message, OnMessage)
     IPC_MESSAGE_HANDLER(WorkerProcessMsg_MessagesQueued, OnMessagedQueued)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void WebMessagePortChannelImpl::OnMessage(
     const string16& message,
     const std::vector<int>& sent_message_port_ids,
     const std::vector<int>& new_routing_ids) {
   AutoLock auto_lock(lock_);
   Message msg;
   msg.message = message;
   if (!sent_message_port_ids.empty()) {
@@ skipping 34 matching lines @@
 
   message_port_id_ = MSG_ROUTING_NONE;
 
   Release();
   ChildProcess::current()->ReleaseProcess();
 }
 
 WebMessagePortChannelImpl::Message::Message() {}
 
 WebMessagePortChannelImpl::Message::~Message() {}