update appcache expectations for the two failing tests to match reality.
update appcache expectations for the two failing tests to match reality.

TBR=michaeln@chromium.org
BUG=268111

Review URL: https://codereview.chromium.org/22310003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@155548 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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