Server push cancellation: fix host resolver set up in URLRequestQuicTest
so that customized host resolver rules can be apply when QuicStreamFactory
resolves host. Also change to force quic on test.example.com:443 so that
https requests will always use QUIC, no TCP racing.

BUG=232040

Review-Url: https://codereview.chromium.org/2693083002
Cr-Commit-Position: refs/heads/master@{#450508}
1 file changed