Re-enable BrowserTest.ThirtyFourTabs on mac.
Re-enable BrowserTest.ThirtyFourTabs on mac.

BUG=49193
TEST=none
TBR=oshima


Review URL: http://codereview.chromium.org/3037009

git-svn-id: http://src.chromium.org/svn/trunk/src@52975 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 635fb160a6614de4cf1449c627a0d6a398289125
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser