Improve speakerphone setting.

+ Persist speakerphone setting across resume/pause.
+ Allow toggling speakerphone before voicemail is played or while
loading.

Bug: 23566924
Bug: 23716100
Change-Id: I5120e70ab7174608086d3cc643c09c2fd9a1f726
3 files changed
tree: 3df0eda3a810c33ba7053d2cdea982e98b580b23
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. proguard.flags