Give MainThreadEventQueue a mutable WebInputEvent.

content/common/input/event_with_latency_info.h

 // 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.
 
 #ifndef CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_
 #define CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "content/common/content_export.h"
@@ skipping 19 matching lines @@
                              blink::WebTouchEvent* event);
 bool CONTENT_EXPORT CanCoalesce(const blink::WebGestureEvent& event_to_coalesce,
                                 const blink::WebGestureEvent& event);
 void CONTENT_EXPORT Coalesce(const blink::WebGestureEvent& event_to_coalesce,
                              blink::WebGestureEvent* event);
 
 }  // namespace internal
 
 class ScopedWebInputEventWithLatencyInfo {
  public:
-  ScopedWebInputEventWithLatencyInfo(const blink::WebInputEvent&,
+  ScopedWebInputEventWithLatencyInfo(ScopedWebInputEvent,
                                      const ui::LatencyInfo&);
 
   ~ScopedWebInputEventWithLatencyInfo();
 
   bool CanCoalesceWith(const ScopedWebInputEventWithLatencyInfo& other) const
       WARN_UNUSED_RESULT;
 
   const blink::WebInputEvent& event() const;
   blink::WebInputEvent& event();
   const ui::LatencyInfo latencyInfo() const { return latency_; }
@@ skipping 53 matching lines @@
 typedef EventWithLatencyInfo<blink::WebMouseWheelEvent>
     MouseWheelEventWithLatencyInfo;
 typedef EventWithLatencyInfo<blink::WebMouseEvent>
     MouseEventWithLatencyInfo;
 typedef EventWithLatencyInfo<blink::WebTouchEvent>
     TouchEventWithLatencyInfo;
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_INPUT_EVENT_WITH_LATENCY_INFO_H_