[ServiceWorker] Add Cache.put tests for URL fragment handling.

Also toss in a test for handling URLs with embedded credentials.

BUG=374802,428970
R=jsbell

Review URL: https://codereview.chromium.org/706073002

git-svn-id: svn://svn.chromium.org/blink/trunk@184942 bbb929c8-8fbe-4397-9dbb-9b2b20218538