wip: Touch Text Selection Prototypes

ui/touch_selection/touch_handle.h

Index: ui/touch_selection/touch_handle.h
diff --git a/ui/touch_selection/touch_handle.h b/ui/touch_selection/touch_handle.h
index eaca7caa92e05a6eb583bba368006c2dde40da88..b4cfd6569efee32e82c04e8fb243cb169a494358 100644
--- a/ui/touch_selection/touch_handle.h
+++ b/ui/touch_selection/touch_handle.h
@@ -41,9 +41,11 @@ class UI_TOUCH_SELECTION_EXPORT TouchHandleDrawable {
 class UI_TOUCH_SELECTION_EXPORT TouchHandleClient {
  public:
   virtual ~TouchHandleClient() {}
-  virtual void OnHandleDragBegin(const TouchHandle& handle) = 0;
+  virtual void OnHandleDragBegin(const TouchHandle& handle,
+                                 base::TimeTicks event_time) = 0;
   virtual void OnHandleDragUpdate(const TouchHandle& handle,
-                                  const gfx::PointF& new_position) = 0;
+                                  const gfx::PointF& new_position,
+                                  base::TimeTicks event_time) = 0;
   virtual void OnHandleDragEnd(const TouchHandle& handle) = 0;
   virtual void OnHandleTapped(const TouchHandle& handle) = 0;
   virtual void SetNeedsAnimate() = 0;
@@ -97,7 +99,7 @@ class UI_TOUCH_SELECTION_EXPORT TouchHandle {
  private:
   friend class TouchSelectionControllerAuraTest;
 
-  void BeginDrag();
+  void BeginDrag(base::TimeTicks event_time);
   void EndDrag();
   void BeginFade();
   void EndFade();