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

content/browser/frame_host/interstitial_page_impl.cc

 // Copyright 2013 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/interstitial_page_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 361 matching lines @@
 }
 
 bool InterstitialPageImpl::OnMessageReceived(RenderViewHost* render_view_host,
                                              const IPC::Message& message) {
   return OnMessageReceived(message);
 }
 
 bool InterstitialPageImpl::OnMessageReceived(const IPC::Message& message) {
 
   bool handled = true;
-  bool message_is_ok = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(InterstitialPageImpl, message, message_is_ok)
+  IPC_BEGIN_MESSAGE_MAP(InterstitialPageImpl, message)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DomOperationResponse,
                         OnDomOperationResponse)
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
-
-  if (!message_is_ok) {
-    RecordAction(base::UserMetricsAction("BadMessageTerminate_RVD"));
-    web_contents()->GetRenderProcessHost()->ReceivedBadMessage();
-  }
+  IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void InterstitialPageImpl::RenderFrameCreated(
     RenderFrameHost* render_frame_host) {
   // Note this is only for subframes in the interstitial, the notification for
   // the main frame happens in RenderViewCreated.
   controller_->delegate()->RenderFrameForInterstitialPageCreated(
       render_frame_host);
@@ skipping 501 matching lines @@
 
   web_contents->GetDelegateView()->TakeFocus(reverse);
 }
 
 void InterstitialPageImpl::InterstitialPageRVHDelegateView::OnFindReply(
     int request_id, int number_of_matches, const gfx::Rect& selection_rect,
     int active_match_ordinal, bool final_update) {
 }
 
 }  // namespace content