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

content/browser/renderer_host/input/input_router_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/renderer_host/input/input_router_impl.h"
 
 #include <math.h>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 250 matching lines @@
 
 void InputRouterImpl::OnViewUpdated(int view_flags) {
   current_view_flags_ = view_flags;
 
   // A fixed page scale or mobile viewport should disable the touch ack timeout.
   UpdateTouchAckTimeoutEnabled();
 }
 
 bool InputRouterImpl::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
-  bool message_is_ok = true;
-  IPC_BEGIN_MESSAGE_MAP_EX(InputRouterImpl, message, message_is_ok)
+  IPC_BEGIN_MESSAGE_MAP(InputRouterImpl, message)
     IPC_MESSAGE_HANDLER(InputHostMsg_HandleInputEvent_ACK, OnInputEventAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_MoveCaret_ACK, OnMsgMoveCaretAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_SelectRange_ACK, OnSelectRangeAck)
     IPC_MESSAGE_HANDLER(ViewHostMsg_HasTouchEventHandlers,
                         OnHasTouchEventHandlers)
     IPC_MESSAGE_HANDLER(InputHostMsg_SetTouchAction,
                         OnSetTouchAction)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
-  if (!message_is_ok)
-    ack_handler_->OnUnexpectedEventAck(InputAckHandler::BAD_ACK_MESSAGE);
-
   return handled;
 }
 
 void InputRouterImpl::OnTouchEventAck(const TouchEventWithLatencyInfo& event,
                                       InputEventAckState ack_result) {
   // Touchstart events sent to the renderer indicate a new touch sequence, but
   // in some cases we may filter out sending the touchstart - catch those here.
   if (WebTouchEventTraits::IsTouchSequenceStart(event.event) &&
       ack_result == INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS) {
     touch_action_filter_.ResetTouchAction();
@@ skipping 444 matching lines @@
 InputRouterImpl::QueuedWheelEvent::QueuedWheelEvent(
     const MouseWheelEventWithLatencyInfo& event,
     bool synthesized_from_pinch)
     : event(event), synthesized_from_pinch(synthesized_from_pinch) {
 }
 
 InputRouterImpl::QueuedWheelEvent::~QueuedWheelEvent() {
 }
 
 }  // namespace content