Adjust mac 10.5 startup expectations.
Adjust mac 10.5 startup expectations.

After the most recent reboot, the startup results
difference is ~30 ms.  Adjust to keep the step green
for now.

BUG=none
TEST=mac 10.5 startup is green
TBR=nsylvain@chromium.org

Review URL: http://codereview.chromium.org/3054001

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@52935 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser