Merge "Fix NPE for checking immersive confirmation window root feature" into sc-dev

import static android.view.WindowManagerPolicyConstants.NAV_BAR_INVALID;

import static android.view.WindowManagerPolicyConstants.NAV_BAR_LEFT;

import static android.view.WindowManagerPolicyConstants.NAV_BAR_RIGHT;

import static android.window.DisplayAreaOrganizer.FEATURE_UNDEFINED;

import static com.android.internal.protolog.ProtoLogGroup.WM_DEBUG_SCREEN_ON;

import static com.android.server.policy.PhoneWindowManager.TOAST_WINDOW_TIMEOUT;

        if (oldImmersiveMode != newImmersiveMode) {

            mLastImmersiveMode = newImmersiveMode;

            // The immersive confirmation window should be attached to the immersive window root.

            final int rootDisplayAreaId = win.getRootDisplayArea().mFeatureId;

            final RootDisplayArea root = win.getRootDisplayArea();

            final int rootDisplayAreaId = root == null ? FEATURE_UNDEFINED : root.mFeatureId;

            mImmersiveModeConfirmation.immersiveModeChangedLw(rootDisplayAreaId, newImmersiveMode,

                    mService.mPolicy.isUserSetupComplete(),

                    isNavBarEmpty(disableFlags));