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

content/browser/screen_orientation/screen_orientation_dispatcher_host.cc

 // Copyright 2014 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/screen_orientation/screen_orientation_dispatcher_host.h"
 
 #include "content/browser/screen_orientation/screen_orientation_provider.h"
 #include "content/common/screen_orientation_messages.h"
 
 namespace content {
 
 ScreenOrientationDispatcherHost::ScreenOrientationDispatcherHost()
   : BrowserMessageFilter(ScreenOrientationMsgStart) {
   if (!provider_.get())
     provider_.reset(CreateProvider());
 }
 
 ScreenOrientationDispatcherHost::~ScreenOrientationDispatcherHost() {
 }
 
 bool ScreenOrientationDispatcherHost::OnMessageReceived(
-    const IPC::Message& message, bool* message_was_ok) {
+    const IPC::Message& message) {
   bool handled = true;
 
-  IPC_BEGIN_MESSAGE_MAP_EX(ScreenOrientationDispatcherHost,
-                           message,
-                           *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(ScreenOrientationDispatcherHost, message)
     IPC_MESSAGE_HANDLER(ScreenOrientationHostMsg_Lock, OnLockRequest)
     IPC_MESSAGE_HANDLER(ScreenOrientationHostMsg_Unlock, OnUnlockRequest)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void ScreenOrientationDispatcherHost::OnOrientationChange(
     blink::WebScreenOrientationType orientation) {
   Send(new ScreenOrientationMsg_OrientationChange(orientation));
 }
 
 void ScreenOrientationDispatcherHost::SetProviderForTests(
@@ skipping 17 matching lines @@
 }
 
 #if !defined(OS_ANDROID)
 // static
 ScreenOrientationProvider* ScreenOrientationDispatcherHost::CreateProvider() {
   return NULL;
 }
 #endif
 
 }  // namespace content