[Android] Use mediasession for Notification controls

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Wed Apr  4 16:21:26 2018 +0200| [32062551aa188a23c0bb58d446c752b44a42c1e7] | committer: Geoffrey Métais

Use mediasession for Notification controls

Playback notification can now persist despite VLC being wiped out

> https://code.videolan.org/videolan/vlc-android/commit/32062551aa188a23c0bb58d446c752b44a42c1e7
---

 vlc-android/AndroidManifest.xml                    |   5 +-
 vlc-android/res/xml/preferences_audio.xml          |   6 -
 .../src/org/videolan/vlc/PlaybackService.java      |  57 +++-------
 .../videolan/vlc/RemoteControlClientReceiver.java  | 125 ---------------------
 .../src/org/videolan/vlc/VLCApplication.java       |   3 -
 .../vlc/gui/helpers/NotificationHelper.java        |  40 +++++--
 .../vlc/gui/preferences/PreferencesAudio.java      |   3 -
 .../vlc/gui/tv/preferences/PreferencesAudio.java   |   1 -
 .../src/org/videolan/vlc/media/MediaUtils.java     |  11 ++
 .../src/org/videolan/vlc/media/PlaylistManager.kt  |   2 +-
 .../src/org/videolan/vlc/util/AndroidDevices.java  |  10 --
 11 files changed, 58 insertions(+), 205 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/32062551aa188a23c0bb58d446c752b44a42c1e7