Decouple EventWithLatencyInfo and WebInputEventTraits [extern templates]

content/browser/renderer_host/input/gesture_event_queue.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/renderer_host/input/gesture_event_queue.h"
 
 #include "base/trace_event/trace_event.h"
 #include "content/browser/renderer_host/input/touchpad_tap_suppression_controller.h"
 #include "content/browser/renderer_host/input/touchscreen_tap_suppression_controller.h"
+#include "content/common/input/web_input_event_traits.h"
 
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
 
 namespace content {
 namespace {
 
 // Whether |event_in_queue| is GesturePinchUpdate or GestureScrollUpdate and
 // has the same modifiers/source as the new scroll/pinch event. Compatible
 // scroll and pinch event pairs can be logically coalesced.
@@ skipping 390 matching lines @@
     return 0;
 
   if (!ignore_next_ack_)
     return 1;
 
   DCHECK_GT(coalesced_gesture_events_.size(), 1U);
   return 2;
 }
 
 }  // namespace content