Retry request if server resets pushed stream before GetPushedStream call.

This is similar to the retry logic implemented at
https://crrev.com/c/848776, see https://crbug.com/776415#c9.

Bug: 776415
Change-Id: Ifdd25e4b7694ced987bfe3013ce825d408b75040
Reviewed-on: https://chromium-review.googlesource.com/851655
Reviewed-by: Helen Li <xunjieli@chromium.org>
Commit-Queue: Bence Béky <bnc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527375}
2 files changed