Disable VerifySiteInstanceCountInBrowsingInstance test.

The test started flaking after an unrelated CL caused a slight change to the
sharding of tests. This implies that the test has previously relied on state
carried over from previous tests to function correctly.

Bug: 934900
Change-Id: Iee0208c99751362a3c5dcf36f70a1625e3ebd6a3
Reviewed-on: https://chromium-review.googlesource.com/c/1483940
Reviewed-by: Charlie Reis <creis@chromium.org>
Commit-Queue: Erik Chen <erikchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634858}
1 file changed