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

content/browser/frame_host/cross_process_frame_connector.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/frame_host/cross_process_frame_connector.h"
 
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
@@ skipping 11 matching lines @@
   frame_proxy_in_parent_renderer->set_cross_process_frame_connector(this);
 }
 
 CrossProcessFrameConnector::~CrossProcessFrameConnector() {
   if (view_)
     view_->set_cross_process_frame_connector(NULL);
 }
 
 bool CrossProcessFrameConnector::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
-  bool msg_is_ok = true;
 
-  IPC_BEGIN_MESSAGE_MAP_EX(CrossProcessFrameConnector, msg, msg_is_ok)
+  IPC_BEGIN_MESSAGE_MAP(CrossProcessFrameConnector, msg)
     IPC_MESSAGE_HANDLER(FrameHostMsg_BuffersSwappedACK, OnBuffersSwappedACK)
     IPC_MESSAGE_HANDLER(FrameHostMsg_CompositorFrameSwappedACK,
                         OnCompositorFrameSwappedACK)
     IPC_MESSAGE_HANDLER(FrameHostMsg_ReclaimCompositorResources,
                         OnReclaimCompositorResources)
     IPC_MESSAGE_HANDLER(FrameHostMsg_ForwardInputEvent, OnForwardInputEvent)
     IPC_MESSAGE_HANDLER(FrameHostMsg_InitializeChildFrame,
                         OnInitializeChildFrame)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void CrossProcessFrameConnector::set_view(
     RenderWidgetHostViewChildFrame* view) {
   // Detach ourselves from the previous |view_|.
   if (view_)
     view_->set_cross_process_frame_connector(NULL);
 
@@ skipping 115 matching lines @@
   }
 
   if (event->type == blink::WebInputEvent::MouseWheel) {
     child_widget->ForwardWheelEvent(
         *static_cast<const blink::WebMouseWheelEvent*>(event));
     return;
   }
 }
 
 }  // namespace content