Change ui::Event::time_stamp from TimeDelta to TimeTicks

components/exo/pointer_delegate.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 COMPONENTS_EXO_POINTER_DELEGATE_H_
 #define COMPONENTS_EXO_POINTER_DELEGATE_H_
 
 #include "base/time/time.h"
 #include "ui/events/event_constants.h"
 
@@ skipping 22 matching lines @@
   // is the location of pointer relative to the origin of surface and
   // |button_flags| contains all currently pressed buttons.
   virtual void OnPointerEnter(Surface* surface,
                               const gfx::PointF& location,
                               int pressed_button_flags) = 0;
 
   // Called when pointer leaves a valid target surface.
   virtual void OnPointerLeave(Surface* surface) = 0;
 
   // Called when pointer moved within the current target surface.
-  virtual void OnPointerMotion(base::TimeDelta time_stamp,
+  virtual void OnPointerMotion(base::TimeTicks time_stamp,
                                const gfx::PointF& location) = 0;
 
   // Called when pointer button state changed. |changed_button_flags| contains
   // all buttons that changed. |pressed| is true if buttons entered pressed
   // state.
-  virtual void OnPointerButton(base::TimeDelta time_stamp,
+  virtual void OnPointerButton(base::TimeTicks time_stamp,
                                int changed_button_flags,
                                bool pressed) = 0;
 
   // Called when pointer is scrolling. |offset| contains the direction and
   // distance of the change. |discrete| is true if the scrolling is caused
   // by a discrete device such as a scroll wheel.
-  virtual void OnPointerScroll(base::TimeDelta time_stamp,
+  virtual void OnPointerScroll(base::TimeTicks time_stamp,
                                const gfx::Vector2dF& offset,
                                bool discrete) = 0;
 
   // Called when a current kinetic scroll should be canceled.
-  virtual void OnPointerScrollCancel(base::TimeDelta time_stamp) = 0;
+  virtual void OnPointerScrollCancel(base::TimeTicks time_stamp) = 0;
 
   // Called when pointer scroll has stopped and a fling is happening (e.g.
   // lifting the fingers from the touchpad after scrolling quickly)
-  virtual void OnPointerScrollStop(base::TimeDelta time_stamp) = 0;
+  virtual void OnPointerScrollStop(base::TimeTicks time_stamp) = 0;
 
   // Called after all pointer information of this frame has been set and the
   // client should evaluate the updated state. No events are being sent before
   // this method is called.
   virtual void OnPointerFrame() = 0;
 
  protected:
   virtual ~PointerDelegate() {}
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_POINTER_DELEGATE_H_