am cc4a38c6: Merge "Properly buffer a certain amount of data on streaming sources before finishing prepare()." into gingerbread

Merge commit 'cc4a38c60f52082f3c1970c7eda6756949c6e5d5' into gingerbread-plus-aosp

* commit 'cc4a38c60f52082f3c1970c7eda6756949c6e5d5':
  Properly buffer a certain amount of data on streaming sources before finishing prepare().