Merge remote-tracking branch 'goog/jb-ub-mail-ur9' into merge

Merge UR8 into MR2.

Change-Id: Ia04852cf84c05ab2ee4898662d347a06d40e5f11
tree: 0a82e828153f83190ab6b640644889ee56316c8e
  1. carousel/
  2. chips/
  3. common/
  4. photoviewer/
  5. variablespeed/
  6. widget/
  7. CleanSpec.mk