Update CertVerifier to watch for the origin loop's destruction, so that it doesn't crash if the SSLClientSocket is leaked.
Update CertVerifier to watch for the origin loop's destruction, so that
it doesn't crash if the SSLClientSocket is leaked.

BUG=chromium-os:8179
TEST=None

Review URL: http://codereview.chromium.org/4299001

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@65349 0039d316-1c4b-4281-b951-d872f2087c98

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