Add Aura handles to be used in unified touch selection

ui/touch_selection/touch_selection_controller.h

Index: ui/touch_selection/touch_selection_controller.h
diff --git a/ui/touch_selection/touch_selection_controller.h b/ui/touch_selection/touch_selection_controller.h
index 115dd0d637046b44aa49c42e832fc5e82489cc95..9065b7801eb4fa316b971ca2970399ce651f0b13 100644
--- a/ui/touch_selection/touch_selection_controller.h
+++ b/ui/touch_selection/touch_selection_controller.h
@@ -36,6 +36,12 @@ class UI_TOUCH_SELECTION_EXPORT TouchSelectionControllerClient {
 class UI_TOUCH_SELECTION_EXPORT TouchSelectionController
     : public TouchHandleClient {
  public:
+  enum ActiveStatus {

[jdduke (slow), 2015/05/07 20:38:15]

Do we need to expose this publicly? 

[mohsen, 2015/05/07 21:21:55]

In a few places for Aura implementation, we'll need to know if touch selection
is active or not. That's why active_status() method (and this enum) is public.
For example, in the main patch (http://crrev.com/698253004), see line 2183 of
render_widget_host_view_aura.cc and line 167 of
touch_selection_controller_client_aura.cc. (they're still using
is_insertion_active()/is_selection_active() which after this patch would change
to active_status())

+    INACTIVE,
+    INSERTION_ACTIVE,
+    SELECTION_ACTIVE,
+  };
+
   TouchSelectionController(TouchSelectionControllerClient* client,
                            base::TimeDelta tap_timeout,
                            float tap_slop,
@@ -78,6 +84,9 @@ class UI_TOUCH_SELECTION_EXPORT TouchSelectionController
   // To be called when the contents of the focused region changes.
   void OnSelectionEmpty(bool empty);
 
+  // To be called when native view moves around.
+  void OnNativeViewMoved();
+
   // Ticks an active animation, as requested to the client by |SetNeedsAnimate|.
   // Returns true if an animation is active and requires further ticking.
   bool Animate(base::TimeTicks animate_time);
@@ -97,6 +106,11 @@ class UI_TOUCH_SELECTION_EXPORT TouchSelectionController
   const gfx::PointF& GetStartPosition() const;
   const gfx::PointF& GetEndPosition() const;
 
+  const SelectionBound& start() const { return start_; }
+  const SelectionBound& end() const { return end_; }
+
+  ActiveStatus active_status() const { return active_status_; }
+
  private:
   enum InputEventType { TAP, LONG_PRESS, INPUT_EVENT_TYPE_NONE };
 
@@ -146,13 +160,13 @@ class UI_TOUCH_SELECTION_EXPORT TouchSelectionController
   TouchHandleOrientation start_orientation_;
   TouchHandleOrientation end_orientation_;
 
+  ActiveStatus active_status_;
+
   scoped_ptr<TouchHandle> insertion_handle_;
-  bool is_insertion_active_;
   bool activate_insertion_automatically_;
 
   scoped_ptr<TouchHandle> start_selection_handle_;
   scoped_ptr<TouchHandle> end_selection_handle_;
-  bool is_selection_active_;
   bool activate_selection_automatically_;
 
   bool selection_empty_;