tree adb377b31f96748b25aeacdec1dcef1be3348a0c
parent 635575d57972e6d606e5baa6efcb78a43a230816
author Jack He <siyuanh@google.com> 1497667438 -0700
committer Jack He <siyuanh@google.com> 1498795296 +0000

Add APIs to get remote device's battery level (1/2)

* Add BluetoothDevice.getBatteryLevel() API to retreive battery level
  information of remote device
* Add BluetoothDevice.ACTION_BATTERY_LEVEL_CHANGED intent to notify user
  that remote device's battery level has changed

Bug: 35874078
Test: make, pair with devices and use them
Change-Id: I41051ee25383f5f3a1e505aef6f8c526385f58bd
Merged-In: I41051ee25383f5f3a1e505aef6f8c526385f58bd
(cherry picked from commit 1d312bfa78c25e0e1d6ea25b2c027e2efdd5a418)