am: bb09b7b
* commit 'bb09b7bf591ffd34edd63df7082bc723a2137347':
Clean up docs, attrs, and APIs for PopupWindow enter/exit transitions
am: bb09b7b
* commit 'bb09b7bf591ffd34edd63df7082bc723a2137347':
Clean up docs, attrs, and APIs for PopupWindow enter/exit transitions