re-land the "SourceEventType added to LatencyInfo."

content/browser/renderer_host/render_widget_host_input_event_router.h

 // Copyright 2015 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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 39 matching lines @@
 class CONTENT_EXPORT RenderWidgetHostInputEventRouter
     : public RenderWidgetHostViewBaseObserver {
  public:
   RenderWidgetHostInputEventRouter();
   ~RenderWidgetHostInputEventRouter() final;
 
   void OnRenderWidgetHostViewBaseDestroyed(
       RenderWidgetHostViewBase* view) override;
 
   void RouteMouseEvent(RenderWidgetHostViewBase* root_view,
-                       blink::WebMouseEvent* event);
+                       blink::WebMouseEvent* event,
+                       const ui::LatencyInfo& latency);
   void RouteMouseWheelEvent(RenderWidgetHostViewBase* root_view,
-                            blink::WebMouseWheelEvent* event);
+                            blink::WebMouseWheelEvent* event,
+                            const ui::LatencyInfo& latency);
   void RouteGestureEvent(RenderWidgetHostViewBase* root_view,
                          blink::WebGestureEvent* event,
                          const ui::LatencyInfo& latency);
   void RouteTouchEvent(RenderWidgetHostViewBase* root_view,
                        blink::WebTouchEvent *event,
                        const ui::LatencyInfo& latency);
 
   void BubbleScrollEvent(RenderWidgetHostViewBase* target_view,
                          const blink::WebGestureEvent& event);
   void CancelScrollBubbling(RenderWidgetHostViewBase* target_view);
@@ skipping 103 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostInputEventRouter);
   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest,
                            InputEventRouterGestureTargetQueueTest);
   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest,
                            InputEventRouterTouchpadGestureTargetTest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_INPUT_EVENT_ROUTER_H_