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

chrome/worker/webworker_stub.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/worker/webworker_stub.h"
 
 #include "base/command_line.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/file_system/file_system_dispatcher.h"
@@ skipping 42 matching lines @@
 }
 
 void WebWorkerStub::OnChannelError() {
     OnTerminateWorkerContext();
 }
 
 const GURL& WebWorkerStub::url() const {
   return url_;
 }
 
-void WebWorkerStub::OnMessageReceived(const IPC::Message& message) {
+bool WebWorkerStub::OnMessageReceived(const IPC::Message& message) {
   if (!impl_)
-    return;
+    return false;
 
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(WebWorkerStub, message)
     IPC_MESSAGE_FORWARD(WorkerMsg_StartWorkerContext, impl_,
                         WebWorker::startWorkerContext)
     IPC_MESSAGE_HANDLER(WorkerMsg_TerminateWorkerContext,
                         OnTerminateWorkerContext)
     IPC_MESSAGE_HANDLER(WorkerMsg_PostMessage, OnPostMessage)
     IPC_MESSAGE_FORWARD(WorkerMsg_WorkerObjectDestroyed, impl_,
                         WebWorker::workerObjectDestroyed)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void WebWorkerStub::OnTerminateWorkerContext() {
   impl_->terminateWorkerContext();
 
   // Call the client to make sure context exits.
   EnsureWorkerContextTerminates();
 }
 
 void WebWorkerStub::OnPostMessage(
     const string16& message,
     const std::vector<int>& sent_message_port_ids,
     const std::vector<int>& new_routing_ids) {
   WebKit::WebMessagePortChannelArray channels(sent_message_port_ids.size());
   for (size_t i = 0; i < sent_message_port_ids.size(); i++) {
     channels[i] = new WebMessagePortChannelImpl(
         new_routing_ids[i], sent_message_port_ids[i]);
   }
 
   impl_->postMessageToWorkerContext(message, channels);
 }