am 52b41462: am 9cd3ff7d: Merge "Introduce a new event: EVENT_DATA_RAT_CHANGED which is used to indicate data rat change."

* commit '52b4146273ea29f6d1ed89e4de79f2d7ff0d71dc':
  Introduce a new event: EVENT_DATA_RAT_CHANGED which is used to indicate data rat change.