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

content/browser/renderer_host/gamepad_browser_message_filter.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/renderer_host/gamepad_browser_message_filter.h"
 
 #include "content/browser/gamepad/gamepad_service.h"
 #include "content/common/gamepad_messages.h"
 
 namespace content {
 
 GamepadBrowserMessageFilter::GamepadBrowserMessageFilter()
     : BrowserMessageFilter(GamepadMsgStart),
       is_started_(false) {
 }
 
 GamepadBrowserMessageFilter::~GamepadBrowserMessageFilter() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (is_started_)
     GamepadService::GetInstance()->RemoveConsumer(this);
 }
 
 bool GamepadBrowserMessageFilter::OnMessageReceived(
-    const IPC::Message& message,
-    bool* message_was_ok) {
+    const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(GamepadBrowserMessageFilter,
-                           message,
-                           *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(GamepadBrowserMessageFilter, message)
     IPC_MESSAGE_HANDLER(GamepadHostMsg_StartPolling, OnGamepadStartPolling)
     IPC_MESSAGE_HANDLER(GamepadHostMsg_StopPolling, OnGamepadStopPolling)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void GamepadBrowserMessageFilter::OnGamepadConnected(
     unsigned index,
     const blink::WebGamepad& gamepad) {
   Send(new GamepadMsg_GamepadConnected(index, gamepad));
 }
 
 void GamepadBrowserMessageFilter::OnGamepadDisconnected(
@@ skipping 11 matching lines @@
   *renderer_handle = service->GetSharedMemoryHandleForProcess(PeerHandle());
 }
 
 void GamepadBrowserMessageFilter::OnGamepadStopPolling() {
   CHECK(is_started_);
   is_started_ = false;
   GamepadService::GetInstance()->ConsumerBecameInactive(this);
 }
 
 }  // namespace content