am 7e397842: Reduce memory usage by the MP4 file writer - Don\'t store timestamp for each output sample - Don\'t store timestamp for statistical data collection if the collection of statistical data is not requested

Merge commit '7e397842d53a4242a019daa4b234910273121c30' into gingerbread-plus-aosp

* commit '7e397842d53a4242a019daa4b234910273121c30':
  Reduce memory usage by the MP4 file writer
tree: 24e5c93b81a6bb707e85494d4d2c61b362af85c1
  1. camera/
  2. cmds/
  3. include/
  4. media/
  5. services/