Previously we didn't pre-read at all if there was any configuration in the ChromeFrame key. This change makes that decision sensitive to the existance of the PreRead value, not just the existance of the ChromeFrame key.
Previously we didn't pre-read at all if there was any configuration in the ChromeFrame key. This change makes that decision sensitive to the existance of the PreRead value, not just the existance of the ChromeFrame key.

TEST=On Vista, create a ChromeFrame pref key, then run: chrome_frame_perftests.exe  --gtest_filter=*X.PerfCold
BUG=45510

Review URL: http://codereview.chromium.org/2844023

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@51486 0039d316-1c4b-4281-b951-d872f2087c98

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