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This was leftover from a previous design where I thought it would be
necessary. It turns out it just made the code ugly and did unnecessary
refcounting.

Review URL: http://codereview.chromium.org/7621054

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97751 0039d316-1c4b-4281-b951-d872f2087c98