[Watchlist] Add storage team to service_worker watchlist

NOTRY=true

Review URL: https://codereview.chromium.org/127653002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243511 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 243511