am e5d18339: Merge "Cannot input the DTMF number from Bluetooth device"

* commit 'e5d18339a614b2921a22f304659560d2b50b70e3':
  Cannot input the DTMF number from Bluetooth device
tree: 1459ea66c024d5ab199eb6d10b71206d482e3ac9
  1. res/
  2. src/
  3. tests/
  4. proguard.flags