mash: Add autoclick app.

ash/autoclick/common/autoclick_controller_common_delegate.h

Index: ash/autoclick/common/autoclick_controller_common_delegate.h
diff --git a/ash/autoclick/common/autoclick_controller_common_delegate.h b/ash/autoclick/common/autoclick_controller_common_delegate.h
index 12035386fad72014cce95cab1a4696b74a44cec8..f07de2c42d156c6b04318b4e310da421870ab7e4 100644
--- a/ash/autoclick/common/autoclick_controller_common_delegate.h
+++ b/ash/autoclick/common/autoclick_controller_common_delegate.h
@@ -22,9 +22,10 @@ class AutoclickControllerCommonDelegate {
   AutoclickControllerCommonDelegate() {}
   virtual ~AutoclickControllerCommonDelegate() {}
 
-  // Creates a ring widget at |event_location|. AutoclickControllerCommon
-  // takes ownership of the created widget.
-  virtual std::unique_ptr<views::Widget> CreateAutoclickRingWidget(
+  // Creates a ring widget at |event_location|.
+  // AutoclickControllerCommonDelegate still has ownership of the widget they
+  // created.
+  virtual views::Widget* CreateAutoclickRingWidget(
       const gfx::Point& event_location) = 0;
 
   // Moves |widget| to |event_location|.