Automated Commit: Committing new LKGM version 6168.0.0 for chromeos.

Cr-Commit-Position: refs/heads/master@{#290783}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@290783 0039d316-1c4b-4281-b951-d872f2087c98

chromeos/CHROMEOS_LKGM

-6166.0.0
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+6168.0.0
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