Reduce number of iterations on TimeTicks.Deltas test so that unittests run faster.
Reduce number of iterations on TimeTicks.Deltas test
so that unittests run faster.

BUG=22061
TEST=this is the test

Review URL: http://codereview.chromium.org/462010

git-svn-id: http://src.chromium.org/svn/trunk/src@33631 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: cfc99458318b62aff78fe66e4c0e5e7ac21fd7e2
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