Remove IPC_BEGIN_MESSAGE_MAP_EX macro since r270839 made all bad IPCs kill their child processes.

content/browser/renderer_host/file_utilities_message_filter.cc

 // Copyright (c) 2012 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/renderer_host/file_utilities_message_filter.h"
 
 #include "base/file_util.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/common/file_utilities_messages.h"
 
 namespace content {
 
 FileUtilitiesMessageFilter::FileUtilitiesMessageFilter(int process_id)
     : BrowserMessageFilter(FileUtilitiesMsgStart),
       process_id_(process_id) {
 }
 
 FileUtilitiesMessageFilter::~FileUtilitiesMessageFilter() {
 }
 
 void FileUtilitiesMessageFilter::OverrideThreadForMessage(
     const IPC::Message& message,
     BrowserThread::ID* thread) {
   if (IPC_MESSAGE_CLASS(message) == FileUtilitiesMsgStart)
     *thread = BrowserThread::FILE;
 }
 
-bool FileUtilitiesMessageFilter::OnMessageReceived(const IPC::Message& message,
-                                                   bool* message_was_ok) {
+bool FileUtilitiesMessageFilter::OnMessageReceived(
+    const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(FileUtilitiesMessageFilter, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(FileUtilitiesMessageFilter, message)
     IPC_MESSAGE_HANDLER(FileUtilitiesMsg_GetFileInfo, OnGetFileInfo)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void FileUtilitiesMessageFilter::OnGetFileInfo(
     const base::FilePath& path,
     base::File::Info* result,
     base::File::Error* status) {
   *result = base::File::Info();
   *status = base::File::FILE_OK;
 
   // Get file metadata only when the child process has been granted
   // permission to read the file.
   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanReadFile(
       process_id_, path)) {
     return;
   }
 
   if (!base::GetFileInfo(path, result))
     *status = base::File::FILE_ERROR_FAILED;
 }
 
 }  // namespace content