b63b93dee7
1. ClipDrawable.getOpacity() now correctly respects the current level 2. DrawableWrapper checks the contained drawable's changing config even if it doesn't have a constant state 3. DrawableWrapper gives priority to the last valid child drawable rather than the drawable attribute Bug: 21406104 Change-Id: I442fe90d0a3865bfdc6b2d14a7358178310dde02