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

content/public/browser/browser_message_filter.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_BROWSER_MESSAGE_FILTER_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSER_MESSAGE_FILTER_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/process/process.h"
 #include "content/common/content_export.h"
@@ skipping 57 matching lines @@
   // return a non-null task runner which will target tasks accordingly.
   // Note: To target the UI thread, please use OverrideThreadForMessage
   // since that has extra checks to avoid deadlocks.
   virtual base::TaskRunner* OverrideTaskRunnerForMessage(
       const IPC::Message& message);
 
   // Override this to receive messages.
   // Your function will normally be called on the IO thread.  However, if your
   // OverrideXForMessage modifies the thread used to dispatch the message,
   // your function will be called on the requested thread.
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 bool* message_was_ok) = 0;
+  virtual bool OnMessageReceived(const IPC::Message& message) = 0;
 
   // Can be called on any thread, after OnChannelConnected is called.
   base::ProcessHandle PeerHandle();
 
   // Can be called on any thread, after OnChannelConnected is called.
   base::ProcessId peer_pid() const { return peer_pid_; }
 
   void set_peer_pid_for_testing(base::ProcessId peer_pid) {
     peer_pid_ = peer_pid;
   }
@@ skipping 47 matching lines @@
 
 struct BrowserMessageFilterTraits {
   static void Destruct(const BrowserMessageFilter* filter) {
     filter->OnDestruct();
   }
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_MESSAGE_FILTER_H_