Add ScreenRecord for testDragCustomShortcut

- For investigation of a failing test

Bug: 195263971
Test: manual
Change-Id: If68e678a847f70c5b891c9dbcece77333fedf846
diff --git a/tests/src/com/android/launcher3/ui/widget/AddWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/AddWidgetTest.java
index dad4f2b..2e8048a 100644
--- a/tests/src/com/android/launcher3/ui/widget/AddWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/AddWidgetTest.java
@@ -27,6 +27,7 @@
 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 @@
      */
     @Test
     @PortraitLandscape
+    @ScreenRecord //b/195263971
     public void testDragCustomShortcut() throws Throwable {
         clearHomescreen();
         mDevice.pressHome();