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

content/browser/renderer_host/render_widget_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 431 matching lines @@
 bool RenderWidgetHostImpl::IsLoading() const {
   return is_loading_;
 }
 
 bool RenderWidgetHostImpl::IsRenderView() const {
   return false;
 }
 
 bool RenderWidgetHostImpl::OnMessageReceived(const IPC::Message &msg) {
   bool handled = true;
-  bool msg_is_ok = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(RenderWidgetHostImpl, msg, msg_is_ok)
+  IPC_BEGIN_MESSAGE_MAP(RenderWidgetHostImpl, msg)
     IPC_MESSAGE_HANDLER(InputHostMsg_QueueSyntheticGesture,
                         OnQueueSyntheticGesture)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderViewReady, OnRenderViewReady)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RenderProcessGone, OnRenderProcessGone)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnClose)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateScreenRects_ACK,
                         OnUpdateScreenRectsAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RequestMove, OnRequestMove)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetTooltipText, OnSetTooltipText)
     IPC_MESSAGE_HANDLER_GENERIC(ViewHostMsg_SwapCompositorFrame,
-                                msg_is_ok = OnSwapCompositorFrame(msg))
+                                OnSwapCompositorFrame(msg))
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidStopFlinging, OnFlingingStopped)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateRect, OnUpdateRect)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Focus, OnFocus)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Blur, OnBlur)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnSetCursor)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SetTouchEventEmulationEnabled,
                         OnSetTouchEventEmulationEnabled)
     IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputTypeChanged,
                         OnTextInputTypeChanged)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeCancelComposition,
@@ skipping 13 matching lines @@
 #endif
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_CompositorSurfaceBuffersSwapped,
                         OnCompositorSurfaceBuffersSwapped)
 #endif
 #if defined(OS_MACOSX) || defined(USE_AURA)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ImeCompositionRangeChanged,
                         OnImeCompositionRangeChanged)
 #endif
     IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP_EX()
+  IPC_END_MESSAGE_MAP()
 
   if (!handled && input_router_ && input_router_->OnMessageReceived(msg))
     return true;
 
   if (!handled && view_ && view_->OnMessageReceived(msg))
     return true;
 
-  if (!msg_is_ok) {
-    // The message de-serialization failed. Kill the renderer process.
-    RecordAction(base::UserMetricsAction("BadMessageTerminate_RWH"));
-    GetProcess()->ReceivedBadMessage();
-  }
   return handled;
 }
 
 bool RenderWidgetHostImpl::Send(IPC::Message* msg) {
   if (IPC_MESSAGE_ID_CLASS(msg->type()) == InputMsgStart)
     return input_router_->SendInput(make_scoped_ptr(msg));
 
   return process_->Send(msg);
 }
 
@@ skipping 1800 matching lines @@
   }
 }
 
 SkBitmap::Config RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content