Merge "CallManager: do not deliver ring event if fg call is live." into gingerbread

                    mUnknownConnectionRegistrants.notifyRegistrants((AsyncResult) msg.obj);

                    break;

                case EVENT_INCOMING_RING:

                    // The event may come from RIL who's not aware of an ongoing fg call

                    if (!hasActiveFgCall()) {

                        mIncomingRingRegistrants.notifyRegistrants((AsyncResult) msg.obj);

                    }

                    break;

                case EVENT_RINGBACK_TONE:

                    mRingbackToneRegistrants.notifyRegistrants((AsyncResult) msg.obj);