Identify context menus being opened via the long press gesture

ui/base/ui_base_types.h

Index: ui/base/ui_base_types.h
diff --git a/ui/base/ui_base_types.h b/ui/base/ui_base_types.h
index 4ed9f25cfd53b807ac46a839b175754977b7e9f2..846b5d308429a4fffa479965ec54464995e7252c 100644
--- a/ui/base/ui_base_types.h
+++ b/ui/base/ui_base_types.h
@@ -47,7 +47,8 @@ enum MenuSourceType {
   MENU_SOURCE_KEYBOARD        = 2,
   MENU_SOURCE_TOUCH           = 3,

[tdresser, 2016/01/26 13:36:59]

Would it be clearer to have MENU_SOURCE_LONG_PRESS and MENU_SOURCE_LONG_TAP?

We only open the context menu for touch on long press or long tap, correct?

[ananta, 2016/01/26 20:20:23]

Done.

   MENU_SOURCE_TOUCH_EDIT_MENU = 4,
-  MENU_SOURCE_TYPE_LAST = MENU_SOURCE_TOUCH_EDIT_MENU
+  MENU_SOURCE_LONG_PRESS      = 5,
+  MENU_SOURCE_TYPE_LAST = MENU_SOURCE_LONG_PRESS
 };
 
 UI_BASE_EXPORT MenuSourceType GetMenuSourceTypeForEvent(const ui::Event& event);