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

content/browser/device_sensors/device_motion_message_filter.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/device_sensors/device_motion_message_filter.h"
 
 #include "content/browser/device_sensors/device_inertial_sensor_service.h"
 #include "content/common/device_sensors/device_motion_messages.h"
 
 namespace content {
 
 DeviceMotionMessageFilter::DeviceMotionMessageFilter()
     : BrowserMessageFilter(DeviceMotionMsgStart),
       is_started_(false) {
 }
 
 DeviceMotionMessageFilter::~DeviceMotionMessageFilter() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   if (is_started_)
     DeviceInertialSensorService::GetInstance()->RemoveConsumer(
         CONSUMER_TYPE_MOTION);
 }
 
-bool DeviceMotionMessageFilter::OnMessageReceived(
-    const IPC::Message& message,
-    bool* message_was_ok) {
+bool DeviceMotionMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(DeviceMotionMessageFilter,
-                           message,
-                           *message_was_ok)
+  IPC_BEGIN_MESSAGE_MAP(DeviceMotionMessageFilter, message)
     IPC_MESSAGE_HANDLER(DeviceMotionHostMsg_StartPolling,
                         OnDeviceMotionStartPolling)
     IPC_MESSAGE_HANDLER(DeviceMotionHostMsg_StopPolling,
                         OnDeviceMotionStopPolling)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void DeviceMotionMessageFilter::OnDeviceMotionStartPolling() {
   DCHECK(!is_started_);
   if (is_started_)
     return;
   is_started_ = true;
   DeviceInertialSensorService::GetInstance()->AddConsumer(
       CONSUMER_TYPE_MOTION);
@@ skipping 10 matching lines @@
 }
 
 void DeviceMotionMessageFilter::DidStartDeviceMotionPolling() {
   Send(new DeviceMotionMsg_DidStartPolling(
       DeviceInertialSensorService::GetInstance()->
           GetSharedMemoryHandleForProcess(
               CONSUMER_TYPE_MOTION, PeerHandle())));
 }
 
 }  // namespace content