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

chrome/browser/media/cast_transport_host_filter_unittest.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 "base/callback.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/default_tick_clock.h"
 #include "chrome/browser/media/cast_transport_host_filter.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "media/cast/logging/logging_defines.h"
@@ skipping 12 matching lines @@
     // TODO(hubbe): Open up an UDP port and make sure
     // we can send and receive packets.
     net::IPAddressNumber receiver_address(4, 0);
     receiver_address[0] = 127;
     receiver_address[3] = 1;
     receive_endpoint_ = net::IPEndPoint(receiver_address, 7);
   }
 
  protected:
   void FakeSend(const IPC::Message& message) {
-    bool message_was_ok;
-    EXPECT_TRUE(filter_->OnMessageReceived(message, &message_was_ok));
-    EXPECT_TRUE(message_was_ok);
+    EXPECT_TRUE(filter_->OnMessageReceived(message));
   }
 
   content::TestBrowserThreadBundle browser_thread_bundle_;
   scoped_refptr<content::BrowserMessageFilter> filter_;
   net::IPAddressNumber receiver_address_;
   net::IPEndPoint receive_endpoint_;
 };
 
 TEST_F(CastTransportHostFilterTest, NewDelete) {
   const int kChannelId = 17;
@@ skipping 86 matching lines @@
   missing_packets[3].insert(7);
   CastHostMsg_ResendPackets resend_msg(
       kChannelId, false, missing_packets);
   FakeSend(resend_msg);
 
   CastHostMsg_Delete delete_msg(kChannelId);
   FakeSend(delete_msg);
 }
 
 }  // namespace