connieshi 238b658417 Add helper method for attaching a BadgeDrawable to its associated anchor.
For API 18+, the BadgeDrawable will be added as a view overlay.
For pre-API 18, the BadgeDrawable will be set as the foreground of a FrameLayout that is an ancestor of the anchor.

PiperOrigin-RevId: 238661951
2019-03-22 16:15:41 -04:00
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