Bypass DRP if a redirect cycle is detected

If a redirect cycle is detected, Data Reduction Proxy (DRP) is bypassed
for the current request.

BUG=664586
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_cronet_tester

Review-Url: https://codereview.chromium.org/2777823002
Cr-Commit-Position: refs/heads/master@{#460656}
12 files changed