Merge "Guard hasWindowExtensionsEnabled" into main

     */

    @TestApi

    static boolean hasWindowExtensionsEnabled() {

        return HAS_WINDOW_EXTENSIONS_ON_DEVICE

                && ActivityTaskManager.supportsMultiWindow(ActivityThread.currentApplication())

        if (!Flags.enableWmExtensionsForAllFlag() && ACTIVITY_EMBEDDING_GUARD_WITH_ANDROID_15) {

            // Since enableWmExtensionsForAllFlag, HAS_WINDOW_EXTENSIONS_ON_DEVICE is now true

            // on all devices by default as a build file property.

            // Until finishing flag ramp up, only return true when

            // ACTIVITY_EMBEDDING_GUARD_WITH_ANDROID_15 is false, which is set per device by

            // OEMs.

                && (Flags.enableWmExtensionsForAllFlag()

                || !ACTIVITY_EMBEDDING_GUARD_WITH_ANDROID_15);

            return false;

        }

        if (!HAS_WINDOW_EXTENSIONS_ON_DEVICE) {

            return false;

        }

        try {

            return ActivityTaskManager.supportsMultiWindow(ActivityThread.currentApplication());

        } catch (Exception e) {

            // In case the PackageManager is not set up correctly in test.

            Log.e("WindowManager", "Unable to read if the device supports multi window", e);

            return false;

        }

    }

    /**