Fix test failure introduced with recent change to use salted hashes.

BUG=339840

Review URL: https://codereview.chromium.org/145513009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250444 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250444