aw: Ensure synchronization of PopupWindow handle visibility/position

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 7ec25d1d442e6d13bbdcb9c7990f4e61120e039d..4161e770790ac5a972537cf6964526ca8f29f185 100644
--- a/ui/touch_selection/touch_selection_controller.h
+++ b/ui/touch_selection/touch_selection_controller.h
@@ -129,9 +129,11 @@ class UI_TOUCH_SELECTION_EXPORT TouchSelectionController
   void OnInsertionChanged();
   void OnSelectionChanged();
 
-  void ActivateInsertion();
+  // Returns true if insertion mode was newly (re)activated.
+  bool ActivateInsertionIfNecessary();
   void DeactivateInsertion();
-  void ActivateSelection();
+  // Returns true if selection mode was newly (re)activated.
+  bool ActivateSelectionIfNecessary();
   void DeactivateSelection();
   void ForceNextUpdateIfInactive();