Merge "Camera: Extend FEATURE_CAMERA_CONCURRENT to old API levels" into...

     * Feature for {@link #getSystemAvailableFeatures} and

     * {@link #hasSystemFeature}: The device's main front and back cameras can stream

     * concurrently as described in {@link

     * android.hardware.camera2.CameraManager#getConcurrentCameraIds()}

     * android.hardware.camera2.CameraManager#getConcurrentCameraIds()}.

     * </p>

     * <p>While {@link android.hardware.camera2.CameraManager#getConcurrentCameraIds()} and

     * associated APIs are only available on API level 30 or newer, this feature flag may be

     * advertised by devices on API levels below 30. If present on such a device, the same

     * guarantees hold: The main front and main back camera can be used at the same time, with

     * guaranteed stream configurations as defined in the table for concurrent streaming at

     * {@link android.hardware.camera2.CameraDevice#createCaptureSession(android.hardware.camera2.params.SessionConfiguration)}.

     * </p>

     */

    @SdkConstant(SdkConstantType.FEATURE)

    public static final String FEATURE_CAMERA_CONCURRENT = "android.hardware.camera.concurrent";