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

content/browser/loader/resource_dispatcher_host_impl.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.
 
 // This is the browser side of the resource dispatcher, it receives requests
 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and
 // dispatches them to URLRequests. It then forwards the messages from the
 // URLRequests back to the correct process for handling.
 //
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
@@ skipping 91 matching lines @@
 
   // Notify the ResourceDispatcherHostImpl of a resource context destruction.
   void RemoveResourceContext(ResourceContext* context);
 
   // Force cancels any pending requests for the given |context|. This is
   // necessary to ensure that before |context| goes away, all requests
   // for it are dead.
   void CancelRequestsForContext(ResourceContext* context);
 
   // Returns true if the message was a resource message that was processed.
-  // If it was, message_was_ok will be false iff the message was corrupt.
   bool OnMessageReceived(const IPC::Message& message,
-                         ResourceMessageFilter* filter,
-                         bool* message_was_ok);
+                         ResourceMessageFilter* filter);
 
   // Initiates a save file from the browser process (as opposed to a resource
   // request from the renderer or another child process).
   void BeginSaveFile(const GURL& url,
                      const Referrer& referrer,
                      int child_id,
                      int route_id,
                      ResourceContext* context);
 
   // Cancels the given request if it still exists.
@@ skipping 378 matching lines @@
   DelegateMap delegate_map_;
 
   scoped_ptr<ResourceScheduler> scheduler_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_RESOURCE_DISPATCHER_HOST_IMPL_H_