am e7e6c37f: (-s ours) DO NOT MERGE. Add an API to correctly copy the isOpaque flage of an ImageRef to Bitmap.

Merge commit 'e7e6c37f77fd7f4c0b96f1fce939dd51af37495d'

* commit 'e7e6c37f77fd7f4c0b96f1fce939dd51af37495d':
  DO NOT MERGE. Add an API to correctly copy the isOpaque flage of an ImageRef to Bitmap.