DevTools: report redirect responses only if response interception is enabled

We previously reported redirect responses when the "Request" interception
stage was enabled. Since they technically are responses, we will now report
them only when the "HeadersReceived" stage is enabled.

Change-Id: I5318f8b4167b662d11852b8d93bff4b9db960c8d
Reviewed-on: https://chromium-review.googlesource.com/1147507
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Andrey Kosyakov <caseq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577366}
9 files changed