Hook up media player resumption to UI

Fixes: 157926365
Fixes: 158691042
Test: atest MediaControlPanelTest
Test: atest MediaDataCombineLatestTest
Test: atest MediaDeviceManagerTest
Test: atest MediaTimeoutListenerTest
Test: with media playing:
      - got from keyguard to QS
      - got from keyguard to QQS
      - got from QQS to QS
      repeat after media timeout
Change-Id: I3f6ccd69b06c328ce528959b868eb194fbf4ca9e