am d353c840: Merge "HW audio encoder expects timestamp via kKeyTime from each input buffer" into gingerbread

Merge commit 'd353c840ad5bf1b4e6bfba0e10bcdc79223bcdf7' into gingerbread-plus-aosp

* commit 'd353c840ad5bf1b4e6bfba0e10bcdc79223bcdf7':
  HW audio encoder expects timestamp via kKeyTime from each input buffer