Fix mac perf moz expectation.
Fix mac perf moz expectation.

BUG=29318
TEST=mac moz perf test goes green

Review URL: http://codereview.chromium.org/466020

git-svn-id: http://src.chromium.org/svn/trunk/src@33707 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 8da8a22c7b0d845ba2e14fe2b0ba55594c5f50d9
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