am e83971e4: Update OpenWnn in donut to the latest. This change includes Tutorial-related change done in cupcake.

Merge commit 'e83971e4dafd53e9fb00386355afdbae7e00c0cf'

* commit 'e83971e4dafd53e9fb00386355afdbae7e00c0cf':
  Update OpenWnn in donut to the latest.