Use WTF::TimeTicks to represent timestamp in Platform/Core event types

third_party/WebKit/Source/core/page/AutoscrollController.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AutoscrollController_h
 #define AutoscrollController_h
 
 #include "core/CoreExport.h"
 #include "platform/geometry/FloatSize.h"
 #include "platform/geometry/IntPoint.h"
 #include "platform/heap/Handle.h"
+#include "wtf/Time.h"
 
 namespace blink {
 
 class LocalFrame;
 class FrameView;
 class Node;
 class Page;
 class PlatformMouseEvent;
 class LayoutBox;
 class LayoutObject;
@@ skipping 19 matching lines @@
   void animate(double monotonicFrameBeginTime);
   bool autoscrollInProgress() const;
   bool autoscrollInProgress(const LayoutBox*) const;
   bool middleClickAutoscrollInProgress() const;
   void startAutoscrollForSelection(LayoutObject*);
   void stopAutoscroll();
   void stopAutoscrollIfNeeded(LayoutObject*);
   void updateAutoscrollLayoutObject();
   void updateDragAndDrop(Node* targetNode,
                          const IntPoint& eventPosition,
-                         double eventTime);
+                         TimeTicks eventTime);
   void handleMouseReleaseForMiddleClickAutoscroll(LocalFrame*,
                                                   const PlatformMouseEvent&);
   void startMiddleClickAutoscroll(LayoutBox*, const IntPoint&);
 
  private:
   explicit AutoscrollController(Page&);
 
   void startAutoscroll();
 
   void updateMiddleClickAutoscrollState(FrameView*,
                                         const IntPoint& lastKnownMousePosition);
   FloatSize calculateAutoscrollDelta();
 
   Member<Page> m_page;
   LayoutBox* m_autoscrollLayoutObject;
   LayoutBox* m_pressedLayoutObject;
   AutoscrollType m_autoscrollType;
   IntPoint m_dragAndDropAutoscrollReferencePosition;
-  double m_dragAndDropAutoscrollStartTime;
+  TimeTicks m_dragAndDropAutoscrollStartTime;
   IntPoint m_middleClickAutoscrollStartPos;
   bool m_didLatchForMiddleClickAutoscroll;
 };
 
 }  // namespace blink
 
 #endif  // AutoscrollController_h