[Mac] Disable FindNextInNewTabUsesPrepopulate due to timeout
[Mac] Disable FindNextInNewTabUsesPrepopulate due to timeout

TBR=finnur@chromium.org
TEST=less redness
BUG=43070

Review URL: http://codereview.chromium.org/1944002

git-svn-id: http://src.chromium.org/svn/trunk/src@46344 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3f63817491f3b3d5159232ceb29b8680e03a11e0
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