Makes directory for common Robolectric testing files

Bug: 327689068
Flag: TEST_ONLY
Test: Robolectric tests all pass
Change-Id: I8b4699cdbdd9abb1f68d7210719b1b153c7a7f48
diff --git a/tests/robotests/Android.bp b/tests/robotests/Android.bp
index 5c0f388..76a1dad 100644
--- a/tests/robotests/Android.bp
+++ b/tests/robotests/Android.bp
@@ -10,6 +10,7 @@
     static_libs: [
         "ThemePickerTestLib",
         "ThemePickerTestModule",
+        "WallpaperPicker2RoboLib",
     ],
 }