Merge "Integrate the active emergency session listener in TelephonyRegistry"

api/system-current.txt

api/test-current.txt

cmds/telecom/src/com/android/commands/telecom/Telecom.java

packages/Shell/AndroidManifest.xml

services/core/java/com/android/server/TelephonyRegistry.java

...mm/java/com/android/internal/telecom/ITelecomService.aidl

telephony/java/android/telephony/PhoneStateListener.java

...va/com/android/internal/telephony/ITelephonyRegistry.aidl