Handle wired headset during voicemail playback.

- Switch to wired headset when plugged in even if playing on speaker
- Remember if wired headset overrode speaker so it can be turned back on
  when the headset is unplugged.
- Ensure proximity sensor is turned on iff the earpiece is the audio
  source.

Bug: 23816959

Change-Id: I952c24ee51139f21a17344acd7698c9ed8f52860
4 files changed
tree: 355dd6aacecf8f1ba19cf37349cc9175fb6da2f2
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. proguard.flags