Add ScreenRecord for testDragCustomShortcut

- For investigation of a failing test

Bug: 195263971
Test: manual
Change-Id: If68e678a847f70c5b891c9dbcece77333fedf846

tests/src/com/android/launcher3/ui/widget/AddWidgetTest.java

@@ -27,6 +27,7 @@ import com.android.launcher3.model.data.LauncherAppWidgetInfo;
 import com.android.launcher3.tapl.Widget;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
 import com.android.launcher3.ui.TestViewHelpers;
+import com.android.launcher3.util.rule.ScreenRecordRule.ScreenRecord;
 import com.android.launcher3.util.rule.ShellCommandRule;
 import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;
 
@@ -80,6 +81,7 @@ public class AddWidgetTest extends AbstractLauncherUiTest {
      */
     @Test
     @PortraitLandscape
+    @ScreenRecord //b/195263971
     public void testDragCustomShortcut() throws Throwable {
         clearHomescreen();
         mDevice.pressHome();