Merge "The framework sends a hang up request to the modem before terminating...

    @VisibleForTesting

    public void hangupAllOrphanedConnections(int disconnectCause) {

        Log.w(LOG_TAG, "hangupAllOngoingConnections called for cause " + disconnectCause);

        // Send a call terminate request to all available connections.

        // In the ImsPhoneCallTrackerTest, when the hangup() of the connection call,

        // onCallTerminated() is called immediately and the connection is removed.

        // As a result, an IndexOutOfBoundsException is thrown.

        // This is why it counts backwards.

        int size = getConnections().size();

        for (int index = size - 1; index > -1; index--) {

            try {

                getConnections().get(index).hangup();

            } catch (CallStateException e) {

                loge("Failed to disconnet call...");

            }

        }

        // Move connections to disconnected and notify the reason why.

        for (ImsPhoneConnection connection : mConnections) {

            connection.update(connection.getImsCall(), ImsPhoneCall.State.DISCONNECTED);