Implement compositor thread VSync aligned event queue

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"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "ui/events/blink/blink_event_util.h"
 #include "ui/events/blink/scoped_web_input_event.h"
 #include "ui/events/latency_info.h"
 
 namespace content {
-namespace internal {
-
-bool CONTENT_EXPORT CanCoalesce(const blink::WebMouseEvent& event_to_coalesce,
-                                const blink::WebMouseEvent& event);
-void CONTENT_EXPORT Coalesce(const blink::WebMouseEvent& event_to_coalesce,
-                             blink::WebMouseEvent* event);
-bool CONTENT_EXPORT
-CanCoalesce(const blink::WebMouseWheelEvent& event_to_coalesce,
-            const blink::WebMouseWheelEvent& event);
-void CONTENT_EXPORT Coalesce(const blink::WebMouseWheelEvent& event_to_coalesce,
-                             blink::WebMouseWheelEvent* event);
-bool CONTENT_EXPORT CanCoalesce(const blink::WebTouchEvent& event_to_coalesce,
-                                const blink::WebTouchEvent& event);
-void CONTENT_EXPORT Coalesce(const blink::WebTouchEvent& event_to_coalesce,
-                             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(ui::ScopedWebInputEvent,
                                      const ui::LatencyInfo&);
 
   ~ScopedWebInputEventWithLatencyInfo();
 
   bool CanCoalesceWith(const ScopedWebInputEventWithLatencyInfo& other) const
       WARN_UNUSED_RESULT;
@@ skipping 23 matching lines @@
   EventWithLatencyInfo() {}
 
   bool CanCoalesceWith(const EventWithLatencyInfo& other)
       const WARN_UNUSED_RESULT {
     if (other.event.type != event.type)
       return false;
 
     DCHECK_EQ(sizeof(T), event.size);
     DCHECK_EQ(sizeof(T), other.event.size);
 
-    return internal::CanCoalesce(other.event, event);
+    return ui::CanCoalesce(other.event, event);
   }
 
   void CoalesceWith(const EventWithLatencyInfo& other) {
     // |other| should be a newer event than |this|.
     if (other.latency.trace_id() >= 0 && latency.trace_id() >= 0)
       DCHECK_GT(other.latency.trace_id(), latency.trace_id());
 
     // New events get coalesced into older events, and the newer timestamp
     // should always be preserved.
     const double time_stamp_seconds = other.event.timeStampSeconds;
-    internal::Coalesce(other.event, &event);
+    ui::Coalesce(other.event, &event);
     event.timeStampSeconds = time_stamp_seconds;
 
     // When coalescing two input events, we keep the oldest LatencyInfo
     // for Telemetry latency tests, since it will represent the longest
     // latency.
     other.latency = latency;
     other.latency.set_coalesced();
   }
 };
 
 typedef EventWithLatencyInfo<blink::WebGestureEvent>
     GestureEventWithLatencyInfo;
 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_