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Also try to touch (potentially corrupt) arrays, but do not insist on specific
values being present.

I also tidy up the JS a bit, getting rid of some underscores and double-quotes
that crept in despite what the style guide says.

R=viettrungluu@chromium.org

Review URL: https://codereview.chromium.org/267343006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269955 0039d316-1c4b-4281-b951-d872f2087c98