Make Data Saver proxy bypass logic apply to redirects.
This change makes the DataReductionProxyInterceptor intercept redirects
as well as responses. This will cause clients on captive portal networks
that cause redirect loops when trying to use Data Saver bypass
immediately instead of waiting for 21 redirects.
BUG=
460346
Committed:
https://crrev.com/9e621293154d1419c1e270c923237958ef70a091
Cr-Commit-Position: refs/heads/master@{#319120}