https://bugs.webkit.org/show_bug.cgi?id=120212

        Reviewed by Tim Horton.

        The test never deleted its localhost cookie, so subsequent third party cookie
        relaxing tests saw the existing cookie and failed.

        There is no need to use cookies in this test, and it's actually slightly incorrect,
        as the network layer may refuse to use a cached result simply because cookies changed,
        and then we wouldn't test 3rd party data blocking.

        * platform/qt/http/tests/cache/partitioned-cache-expected.txt:
        * http/tests/cache/partitioned-cache-expected.txt: Updated results. It took me 
        a long time to understand what the test was doing, so made it a bit more self-descriptive.

        * http/tests/cache/partitioned-cache.html: Tabs to spaces.

        * http/tests/cache/resources/echo-cookie.cgi: Removed.
        * http/tests/cache/resources/partitioned-cache-echo-state.php: Added.
        * http/tests/cache/resources/partitioned-cache-loader.html:
        Changed to use a local file on the server to modify resource content.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154505 268f45cc-cd09-0410-ab3c-d52691b4dbfc