Set the unique_event_id when converting from TouchEvent to WebTouchEvent

content/browser/renderer_host/input/touch_event_queue.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/touch_event_queue.h"
 
 #include "base/auto_reset.h"
 #include "base/stl_util.h"
 #include "base/trace_event/trace_event.h"
 #include "content/browser/renderer_host/input/timeout_monitor.h"
@@ skipping 402 matching lines @@
   // also a touch-move, then the events can be coalesced into a single event.
   if (touch_queue_.size() > 1) {
     CoalescedWebTouchEvent* last_event = touch_queue_.back();
     if (last_event->CoalesceEventIfPossible(event))
       return;
   }
   touch_queue_.push_back(new CoalescedWebTouchEvent(event, false));
 }
 
 void TouchEventQueue::ProcessTouchAck(InputEventAckState ack_result,
-                                      const LatencyInfo& latency_info) {
+                                      const LatencyInfo& latency_info,
+                                      uint64 unique_touch_event_id) {
   TRACE_EVENT0("input", "TouchEventQueue::ProcessTouchAck");
 
   DCHECK(!dispatching_touch_ack_);
   dispatching_touch_ = false;
 
   if (timeout_handler_ && timeout_handler_->ConfirmTouchEvent(ack_result))
     return;
 
   touchmove_slop_suppressor_->ConfirmTouchEvent(ack_result);
 
@@ skipping 316 matching lines @@
     if (ack_result == INPUT_EVENT_ACK_STATE_CONSUMED)
       send_touch_events_async_ = false;
     has_handler_for_current_sequence_ |=
         ack_result != INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
   } else if (WebTouchEventTraits::IsTouchSequenceEnd(event)) {
     has_handler_for_current_sequence_ = false;
   }
 }
 
 }  // namespace content