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

components/nacl/browser/nacl_host_message_filter.cc

 // Copyright 2013 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 "components/nacl/browser/nacl_host_message_filter.h"
 
 #include "base/sys_info.h"
 #include "components/nacl/browser/nacl_browser.h"
 #include "components/nacl/browser/nacl_file_host.h"
 #include "components/nacl/browser/nacl_process_host.h"
@@ skipping 19 matching lines @@
       weak_ptr_factory_(this) {
 }
 
 NaClHostMessageFilter::~NaClHostMessageFilter() {
 }
 
 void NaClHostMessageFilter::OnChannelClosing() {
   pnacl::PnaclHost::GetInstance()->RendererClosing(render_process_id_);
 }
 
-bool NaClHostMessageFilter::OnMessageReceived(const IPC::Message& message,
-                                              bool* message_was_ok) {
+bool NaClHostMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(NaClHostMessageFilter, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(NaClHostMessageFilter, message)
 #if !defined(DISABLE_NACL)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_LaunchNaCl, OnLaunchNaCl)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_GetReadonlyPnaclFD,
                                     OnGetReadonlyPnaclFd)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(NaClHostMsg_NaClCreateTemporaryFile,
                                     OnNaClCreateTemporaryFile)
     IPC_MESSAGE_HANDLER(NaClHostMsg_NexeTempFileRequest,
                         OnGetNexeFd)
     IPC_MESSAGE_HANDLER(NaClHostMsg_ReportTranslationFinished,
                         OnTranslationFinished)
@@ skipping 132 matching lines @@
                                      reply_msg);
 }
 
 void NaClHostMessageFilter::OnNaClDebugEnabledForURL(const GURL& nmf_url,
                                                      bool* should_debug) {
   *should_debug =
       nacl::NaClBrowser::GetDelegate()->URLMatchesDebugPatterns(nmf_url);
 }
 
 }  // namespace nacl