Mostly copy over Bluetooth pairing dialog logic from android/settings. Some UI changes to make it car friendly

Bug:64035898

Test: make, flash
Change-Id: I05d42d9455bfad5926ed10891f0e3cae16b5e123
(cherry picked from commit 4ded1e84015daac4515cdb66eda2addd024f0599)
12 files changed
tree: 72e608e5bab68ce1ed042d18e540330e2c444386
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml