Don't run InProcessBrowserTest.Empty when gtest_filter is specified. There are two reasons for this:

Don't run InProcessBrowserTest.Empty when gtest_filter is specified. There are two reasons for this:
-when runing one test locally during development, this slows down things a lot
-on the trybots when sharding_supervisor is used, this test runs ~200 times and wastes a few minutes
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=125908

[jam, 2012-03-09 20:27:30]

If we find that this is actually causing timeouts on trybots for the first test
(since now we don't run the empty test), we can try running the empty test in
sharding_supervisor. I didn't want to do now if we don't need to, because that
script is currently generic and I don't want to make it know about which tests
have this.

[sky, 2012-03-09 20:59:45]

LGTM