Merge "BLE: Don't start scan if the same Pi scan is running." into qt-qpr1-dev

        piInfo.settings = settings;

        piInfo.filters = filters;

        piInfo.callingPackage = callingPackage;

        // Don't start scan if the Pi scan already in mScannerMap.

        if (mScannerMap.getByContextInfo(piInfo) != null) {

            Log.d(TAG, "Don't startScan(PI) since the same Pi scan already in mScannerMap.");

            return;

        }

        ScannerMap.App app = mScannerMap.add(uuid, null, null, piInfo, this);

        app.mUserHandle = UserHandle.of(UserHandle.getCallingUserId());

        mAppOps.checkPackage(Binder.getCallingUid(), callingPackage);