ServiceWorker: Remove redundant state declarations.
ServiceWorker: Remove redundant state declarations.

Remove these states as Chromium doesn't need it anymore.

BUG=375132
TBR=abarth@chromium.org

Review URL: https://codereview.chromium.org/383583005

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@178050 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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