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

components/exo/pointer_delegate.h

Index: components/exo/pointer_delegate.h
diff --git a/components/exo/pointer_delegate.h b/components/exo/pointer_delegate.h
index e9c7193ea3a08ae5742848d944babdebb0283417..182513d2b8571524fa7950be158a193d2ce3d9f2 100644
--- a/components/exo/pointer_delegate.h
+++ b/components/exo/pointer_delegate.h
@@ -40,29 +40,29 @@ class PointerDelegate {
   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