Change tests not to use a real domain.
Change tests to use reserved host www.example.org instead of real host
www.google.com. Load spdy_pooling.pem test certificate in some tests. Use
mail.example.org as a hostname which is also covered by the certificate, and
news.example.org for one which is not.
Loading an actual cert to SSLSocketDataProvider is in preparation for https://crrev.com/
1074193003, which adds a security check that affects these
tests.
BUG=474217
Review URL: https://codereview.chromium.org/
1090943002
Cr-Commit-Position: refs/heads/master@{#326141}