Remove browser_tests from mac-code-coverage and mac10.15-Tests dbg

Also added the test filter for browser_tests to Mac Asan since
there are some browser_test flakes showing on that bot.

Bug: 1201386,1200640
Change-Id: I61ab493e2351cceae908c8088d4e47cabecea12f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2844990
Reviewed-by: Garrett Beaty <gbeaty@chromium.org>
Commit-Queue: Lindsay Pasricha <lindsayw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#874935}
GitOrigin-RevId: 8155d055dce816fef7b20f9025c0719ae404610c
4 files changed