Assigning video_MultiplePlayback to perbuild suite.

The experimental suite has been retired. Moving this test
to run in bvt-perbuild since we want it to run but not block
the build.

BUG=None
TEST=None

Change-Id: I98ac68708285493a48973ba2c86c8a03dbdd3f08
Reviewed-on: https://chromium-review.googlesource.com/521783
Commit-Ready: Vinayak Suley <vsuley@chromium.org>
Tested-by: Vinayak Suley <vsuley@chromium.org>
Reviewed-by: Rohit Makasana <rohitbm@chromium.org>
diff --git a/client/site_tests/video_MultiplePlayback/control b/client/site_tests/video_MultiplePlayback/control
index bfdfe23..f78c119 100755
--- a/client/site_tests/video_MultiplePlayback/control
+++ b/client/site_tests/video_MultiplePlayback/control
@@ -8,7 +8,7 @@
 CRITERIA = """
 This test will fail if video playback fails in any tab.
 """
-ATTRIBUTES = "suite:experimental"
+ATTRIBUTES = "suite:bvt-perbuild"
 TIME = "SHORT"
 TEST_CATEGORY = "General"
 TEST_CLASS = "video"