Merge "[MediaProjection] Clarify createVirtualDisplay flags javadoc" into udc-dev

     * @param surface  The surface to which the content of the virtual display should be rendered,

     *                 or null if there is none initially.

     * @param flags    A combination of virtual display flags. See {@link DisplayManager} for the

     *                 full list of flags.

     *                 full list of flags. Note that

     *                 {@link DisplayManager#VIRTUAL_DISPLAY_FLAG_PRESENTATION}

     *                 is always enabled. The following flags may be overridden, depending on how

     *                 the component with {android.Manifest.permission.MANAGE_MEDIA_PROJECTION}

     *                 handles the user's consent:

     *                 {@link DisplayManager#VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY},

     *                 {@link DisplayManager#VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR},

     *                 {@link DisplayManager#VIRTUAL_DISPLAY_FLAG_PUBLIC}.

     * @param callback Callback invoked when the virtual display's state changes, or null.

     * @param handler  The {@link android.os.Handler} on which the callback should be invoked, or

     *                 null if the callback should be invoked on the calling thread's main