Change over IgnoreReturn to IgnoreResult. remove IgnoreReturn.

content/browser/utility_process_host.cc

 // Copyright (c) 2011 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 "content/browser/utility_process_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 133 matching lines @@
       env_,
 #endif
       cmd_line);
 
   return true;
 }
 
 bool UtilityProcessHost::OnMessageReceived(const IPC::Message& message) {
   BrowserThread::PostTask(
       client_thread_id_, FROM_HERE,
-      base::IgnoreReturn<bool>(
-          base::Bind(&Client::OnMessageReceived, client_.get(), message)));
+      base::Bind(base::IgnoreResult(&Client::OnMessageReceived),
+                 client_.get(), message));
   return true;
 }
 
 void UtilityProcessHost::OnProcessCrashed(int exit_code) {
   BrowserThread::PostTask(
       client_thread_id_, FROM_HERE,
       base::Bind(&Client::OnProcessCrashed, client_.get(), exit_code));
 }