Add @Widget annotation to GestureOverlayView to make it usable in ADT.

import android.view.animation.AccelerateDecelerateInterpolator;

import android.widget.FrameLayout;

import android.os.SystemClock;

import android.annotation.Widget;

import com.android.internal.R;

import java.util.ArrayList;

 * @attr ref android.R.styleable#GestureOverlayView_orientation

 * @attr ref android.R.styleable#GestureOverlayView_uncertainGestureColor

 */

@Widget

public class GestureOverlayView extends FrameLayout {

    public static final int GESTURE_STROKE_TYPE_SINGLE = 0;

    public static final int GESTURE_STROKE_TYPE_MULTIPLE = 1;