landing on behalf of newt: http://codereview.chromium.org/10989066/

TBR=newt@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/11091026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@160948 0039d316-1c4b-4281-b951-d872f2087c98