Merge "Retrive the value of user-pref, if its not stored in persistentDataStore" into tm-qpr-dev

        final Point userPreferredResolution =

                mPersistentDataStore.getUserPreferredResolution(device);

        final float refreshRate = mPersistentDataStore.getUserPreferredRefreshRate(device);

        if (userPreferredResolution == null && Float.isNaN(refreshRate)) {

        // If value in persistentDataStore is null, preserving the mode from systemPreferredMode.

        // This is required because in some devices, user-preferred mode was not stored in

        // persistentDataStore, but was stored in a config which is returned through

        // systemPreferredMode.

        if ((userPreferredResolution == null && Float.isNaN(refreshRate))

                || (userPreferredResolution.equals(0, 0) && refreshRate == 0.0f)) {

            Display.Mode systemPreferredMode = device.getSystemPreferredDisplayModeLocked();

            if (systemPreferredMode == null) {

                return;

            }

            storeModeInPersistentDataStoreLocked(

                    display.getDisplayIdLocked(), systemPreferredMode.getPhysicalWidth(),

                    systemPreferredMode.getPhysicalHeight(), systemPreferredMode.getRefreshRate());

            device.setUserPreferredDisplayModeLocked(systemPreferredMode);

            return;

        }

        Display.Mode.Builder modeBuilder = new Display.Mode.Builder();