Adding test log creation to page load test runner. Adding test start/end timestamps to new test log.
Adding test log creation to page load test runner.
Adding test start/end timestamps to new test log.

Review URL: http://codereview.chromium.org/42420

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@12199 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