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

chrome/browser/media/cast_transport_host_filter.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 #define CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 
 #include "base/id_map.h"
 #include "base/time/default_tick_clock.h"
 #include "chrome/common/cast_messages.h"
@@ skipping 13 matching lines @@
   void NotifyStatusChange(
       int32 channel_id,
       media::cast::transport::CastTransportStatus result);
   void ReceivedPacket(
       int32 channel_id,
       scoped_ptr<media::cast::transport::Packet> result);
   void RawEvents(int32 channel_id,
                  const std::vector<media::cast::PacketEvent>& packet_events);
 
   // BrowserMessageFilter implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) OVERRIDE;
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // Forwarding functions.
   void OnInitializeAudio(
       int32 channel_id,
       const media::cast::transport::CastTransportAudioConfig& config);
   void OnInitializeVideo(
       int32 channel_id,
       const media::cast::transport::CastTransportVideoConfig& config);
   void OnInsertCodedAudioFrame(
       int32 channel_id,
@@ skipping 20 matching lines @@
 
   // Clock used by Cast transport.
   base::DefaultTickClock clock_;
 
   DISALLOW_COPY_AND_ASSIGN(CastTransportHostFilter);
 };
 
 }  // namespace cast
 
 #endif  // CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_