am 3af67d03: Merge "GenericSource: support disconnect before NuCachedSource2...

am 3af67d03: Merge "GenericSource: support disconnect before NuCachedSource2 is created" into lmp-dev

* commit '3af67d03': (32 commits)
  GenericSource: support disconnect before NuCachedSource2 is created
  Camera1 shim: If there's no flash, the keys need to be null.
  NuCachedSource2: more fixes for source read hang
  NuPlayer: change assert to conditional check.
  Camera2Client: log an error when autoFocus is called in wrong state
  NuPlayer: use generation to filter out stale message from renderer.
  MediaBuffer: ABuffer will release MediaBuffer when it's destructed.
  AudioEffect acquires session
  Add support for ANDROID_LOOP to NuPlayer
  StagefrightRecorder: default to codec and fps from camcorder low profile
  AudioPolicyManager: Use "safe" speaker for notifications if available
  mediaplayer: release MediaBuffer in stale input buffers
  NuPlayerDriver: do not set to paused state when receiving playback complete and reset is in progress.
  Revert "Fix AAC timestamps for multiple aac frames per input buffer"
  fix failure in MediaCodecTest#testException
  mediaplayer: limit number of outstanding buffer requests
  NuPlayer: make previous decoders obsolete when reset is done.
  NuPlayer::Renderer::onPause() - Converted CHECK(!mPaused) to a warning.
  NuPlayer: check mSource before deferencing it.
  Move stale handler cleanup to constructor
  ...