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

chrome/browser/spellchecker/spellcheck_message_filter_mac.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 "chrome/browser/spellchecker/spellcheck_message_filter_mac.h"
 
 #include <algorithm>
 #include <functional>
 
 #include "base/barrier_closure.h"
@@ skipping 182 matching lines @@
       render_process_id_(render_process_id),
       client_(new SpellingServiceClient) {
 }
 
 void SpellCheckMessageFilterMac::OverrideThreadForMessage(
     const IPC::Message& message, BrowserThread::ID* thread) {
   if (message.type() == SpellCheckHostMsg_RequestTextCheck::ID)
     *thread = BrowserThread::UI;
 }
 
-bool SpellCheckMessageFilterMac::OnMessageReceived(const IPC::Message& message,
-                                                   bool* message_was_ok) {
+bool SpellCheckMessageFilterMac::OnMessageReceived(
+    const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(SpellCheckMessageFilterMac, message, *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(SpellCheckMessageFilterMac, message)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_CheckSpelling,
                         OnCheckSpelling)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_FillSuggestionList,
                         OnFillSuggestionList)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_ShowSpellingPanel,
                         OnShowSpellingPanel)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_UpdateSpellingPanelWithMisspelledWord,
                         OnUpdateSpellingPanelWithMisspelledWord)
     IPC_MESSAGE_HANDLER(SpellCheckHostMsg_RequestTextCheck,
                         OnRequestTextCheck)
@@ skipping 80 matching lines @@
 }
 
 // TODO(groby): We are currently not notified of retired tags. We need
 // to track destruction of RenderViewHosts on the browser process side
 // to update our mappings when a document goes away.
 void SpellCheckMessageFilterMac::RetireDocumentTag(int route_id) {
   spellcheck_mac::CloseDocumentWithTag(ToDocumentTag(route_id));
   tag_map_.erase(route_id);
 }