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

chrome/utility/utility_thread.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 "chrome/utility/utility_thread.h"
 
 #include <vector>
 
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 33 matching lines @@
 
 
 UtilityThread::UtilityThread()
     : batch_mode_(false) {
   ChildProcess::current()->AddRefProcess();
 }
 
 UtilityThread::~UtilityThread() {
 }
 
-void UtilityThread::OnControlMessageReceived(const IPC::Message& msg) {
+bool UtilityThread::OnControlMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(UtilityThread, msg)
     IPC_MESSAGE_HANDLER(UtilityMsg_UnpackExtension, OnUnpackExtension)
     IPC_MESSAGE_HANDLER(UtilityMsg_UnpackWebResource, OnUnpackWebResource)
     IPC_MESSAGE_HANDLER(UtilityMsg_ParseUpdateManifest, OnParseUpdateManifest)
     IPC_MESSAGE_HANDLER(UtilityMsg_DecodeImage, OnDecodeImage)
     IPC_MESSAGE_HANDLER(UtilityMsg_RenderPDFPagesToMetafile,
                         OnRenderPDFPagesToMetafile)
     IPC_MESSAGE_HANDLER(UtilityMsg_IDBKeysFromValuesAndKeyPath,
                         OnIDBKeysFromValuesAndKeyPath)
     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Started, OnBatchModeStarted)
     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Finished, OnBatchModeFinished)
     IPC_MESSAGE_HANDLER(UtilityMsg_GetPrinterCapsAndDefaults,
                         OnGetPrinterCapsAndDefaults)
+    IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
+  return handled;
 }
 
 void UtilityThread::OnUnpackExtension(const FilePath& extension_path) {
   ExtensionUnpacker unpacker(extension_path);
   if (unpacker.Run() && unpacker.DumpImagesToFile() &&
       unpacker.DumpMessageCatalogsToFile()) {
     Send(new UtilityHostMsg_UnpackExtension_Succeeded(
        *unpacker.parsed_manifest()));
   } else {
     Send(new UtilityHostMsg_UnpackExtension_Failed(unpacker.error_message()));
@@ skipping 241 matching lines @@
     Send(new UtilityHostMsg_GetPrinterCapsAndDefaults_Failed(printer_name));
   }
   ReleaseProcessIfNeeded();
 }
 
 void UtilityThread::ReleaseProcessIfNeeded() {
   if (!batch_mode_)
     ChildProcess::current()->ReleaseProcess();
 }