GitLab

|is_for_auth| is unnecessary since we only need to know which headers
are signature.

Bug: b/162380916
Merge-With: eureka-internal/444720
Test: On device
Change-Id: Icd46e0b88d55de83cbfc1d43fb7584c25999d421
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2382714Reviewed-by: Sean Topping <seantopping@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Junbo Ke <juke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#805902}