Don't show pop-ups and dialogs if we're not attached to a valid window.

b/11229200

Change-Id: Ic44da79e441017ac4ccdb4a254c13965da0cc2f9
1 file changed
tree: 6b0c668032fd4ddeffb6cef4d68ed5f2fbbc155a
  1. carousel/
  2. chips/
  3. common/
  4. photoviewer/
  5. variablespeed/
  6. widget/
  7. CleanSpec.mk