Bug 882551 - Patch 1: BluetoothProfileManagerBase inherits nsIObserver, r=qdot, r=mrbkap, r=echou
Bug 882551 - Patch 2: Remove BluetoothHfpManagerObserver, r=qdot, r=mrbkap, r=echou
Bug 882551 - Patch 3: Remove BluetoothOppManagerObserver, r=qdot, r=mrbkap, r=echou
Bug 882551 - Patch 4: Remove BluetoothA2dpManagerObserver, r=qdot, r=mrbkap, r=echou
Bug 882551 - Patch 5: Change return type of internal functions, r=qdot, r=mrbkap, r=echou