[Android] PlaybackService: Extract ML receiver

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Thu May  3 17:51:04 2018 +0200| [4f1afc901128a5ae46b09006354a3f09b2997347] | committer: Geoffrey Métais

PlaybackService: Extract ML receiver

> https://code.videolan.org/videolan/vlc-android/commit/4f1afc901128a5ae46b09006354a3f09b2997347
---

 .../src/org/videolan/vlc/MediaSessionCallback.kt   | 42 ++++----------
 .../src/org/videolan/vlc/PlaybackService.kt        | 53 +++++-------------
 .../src/org/videolan/vlc/media/MediaUtils.java     | 11 ----
 .../src/org/videolan/vlc/media/PlaylistManager.kt  |  8 ++-
 .../videolan/vlc/util/PBSMedialibraryReceiver.kt   | 64 ++++++++++++++++++++++
 5 files changed, 95 insertions(+), 83 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/4f1afc901128a5ae46b09006354a3f09b2997347