Move Touch Feedback flag to ui_base_switches

ash/shelf/app_list_button.h

Index: ash/shelf/app_list_button.h
diff --git a/ash/shelf/app_list_button.h b/ash/shelf/app_list_button.h
index 699f345ec2d865f7fd8d978369af7c743bbc04b3..9fc27c5fc442f72c0660574311ffbd5e3a68e896 100644
--- a/ash/shelf/app_list_button.h
+++ b/ash/shelf/app_list_button.h
@@ -49,10 +49,6 @@ class AppListButton : public views::ImageButton {
   // the application list.
   bool draw_background_as_active_;
 
-  // True if touch view feedback command line flag has been enabled. When
-  // enabled touch gestures will toggle rendering the background as active.
-  bool touch_feedback_enabled_;
-
   ShelfButtonHost* host_;
   // Reference to the shelf widget containing this button, owned by the
   // root window controller.