Merge "Improve TelecomManager#addNewIncomingCall API docs."

     * {@link #getPhoneAccount}. Self-managed {@link ConnectionService}s must have

     * {@link android.Manifest.permission#MANAGE_OWN_CALLS} to add a new incoming call.

     * <p>

     * Specify the address associated with the incoming call using

     * {@link #EXTRA_INCOMING_CALL_ADDRESS}.  If an incoming call is from an anonymous source, omit

     * this extra and ensure you specify a valid number presentation via

     * {@link Connection#setAddress(Uri, int)} on the {@link Connection} instance you return in

     * your

     * {@link ConnectionService#onCreateIncomingConnection(PhoneAccountHandle, ConnectionRequest)}

     * implementation.

     * <p>

     * The incoming call you are adding is assumed to have a video state of

     * {@link VideoProfile#STATE_AUDIO_ONLY}, unless the extra value

     * {@link #EXTRA_INCOMING_VIDEO_STATE} is specified.