Re-enable browser_tests on a bunch of mac bots.

We disabled browser_tests on all mac bots due to issue 828031.
Now that that's resolved, undo that.

In particular, re-enables browser_tests on Mac Asan.

Bug: 828031
Change-Id: Ic832455a962bb748afb34eebcbf95f0c52e00aca
Reviewed-on: https://chromium-review.googlesource.com/c/1377520
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616740}
5 files changed