Use full pathname to perf_expectations in test.
Use full pathname to perf_expectations in test.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/266055

git-svn-id: http://src.chromium.org/svn/trunk/src@28770 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f9d8e0a8dae19e482d3c435a76b4e38403e646b5
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