Removed logging used to diagnose flakiness.
Removed logging used to diagnose flakiness.

BUG=77323
TEST=PrerenderBrowserTest.PrerenderInfiniteLoopMultiple

Review URL: http://codereview.chromium.org/6881015

git-svn-id: http://src.chromium.org/svn/trunk/src@82027 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3f785d01097629709fcf42def98ab33ea5b65339
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