Merge "IMS: Set phone account in IMS Conference object" into lmp-mr1-dev

    private final List<Connection> mUnmodifiableConferenceableConnections =

            Collections.unmodifiableList(mConferenceableConnections);

    private PhoneAccountHandle mPhoneAccount;

    protected PhoneAccountHandle mPhoneAccount;

    private AudioState mAudioState;

    private int mState = Connection.STATE_NEW;

    private DisconnectCause mDisconnectCause;