mash: Convert ash shelf overflow bubble to wm common types

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index f82620bc34cafbdef65ce558c7a6075f394d9b96..93da54f4435c8e15f02618916af0d638dcf4cdf2 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -88,6 +88,13 @@
       'common/session/session_state_observer.cc',
       'common/session/session_state_observer.h',
       'common/session/session_types.h',
+      'common/shelf/ink_drop_button_listener.h',
+      'common/shelf/overflow_bubble.cc',
+      'common/shelf/overflow_bubble.h',
+      'common/shelf/overflow_bubble_view.cc',
+      'common/shelf/overflow_bubble_view.h',
+      'common/shelf/overflow_button.cc',
+      'common/shelf/overflow_button.h',
       'common/shelf/shelf_alignment_menu.cc',
       'common/shelf/shelf_alignment_menu.h',
       'common/shelf/shelf_constants.cc',
@@ -588,13 +595,6 @@
       'shelf/app_list_button.h',
       'shelf/app_list_shelf_item_delegate.cc',
       'shelf/app_list_shelf_item_delegate.h',
-      'shelf/ink_drop_button_listener.h',
-      'shelf/overflow_bubble.cc',
-      'shelf/overflow_bubble.h',
-      'shelf/overflow_bubble_view.cc',
-      'shelf/overflow_bubble_view.h',
-      'shelf/overflow_button.cc',
-      'shelf/overflow_button.h',
       'shelf/scoped_observer_with_duplicated_sources.h',
       'shelf/shelf.cc',
       'shelf/shelf.h',
@@ -903,9 +903,9 @@
       'common/popup_message_unittest.cc',
       'common/shelf/shelf_model_unittest.cc',
       'common/system/chromeos/brightness/tray_brightness_unittest.cc',
+      'common/system/chromeos/ime_menu/ime_menu_tray_unittest.cc',
       'common/system/chromeos/media_security/multi_profile_media_tray_item_unittest.cc',
       'common/system/chromeos/power/power_status_unittest.cc',
-      'common/system/chromeos/ime_menu/ime_menu_tray_unittest.cc',
       'common/system/chromeos/power/power_status_view_unittest.cc',
       'common/system/chromeos/power/tray_power_unittest.cc',
       'common/system/chromeos/screen_security/screen_tray_item_unittest.cc',