Adding traces to try to figure out why the test fails. It works locally on my win7 (even when run 400 times in a loop) but fails on the build bots. I'm hoping for an error on the next try server run.

Will revert this change once I have more info.

BUG=321622
TBR=kjellander

Review URL: https://codereview.chromium.org/78253004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236494 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236494