Revert "Reland "Add console message in MixedContentChecker::HandleCertificateError""

This reverts commit 7b019e69abc493d78f885ead55889feac68d0f53.

Reason for revert: Causes flaky test (crbug.com/915134)

Original change's description:
> Reland "Add console message in MixedContentChecker::HandleCertificateError"
> 
> This is a reland of dcfa99386d0b0f91107fdb8c248be833ba18fd25. The only diff is that the
> -expected.txt files for serviceworker/thorough/scheme-blob-* have been removed (context
> in crbug.com/914679)
> 
> Original change's description:
> > Add console message in MixedContentChecker::HandleCertificateError
> >
> > Print console message when subresources are loaded over broken HTTPS.
> > Screenshot: https://drive.google.com/file/d/1Sn_2c162NmvCoIXFuFVB68z-MhzphcNT/view?usp=sharing
> >
> > Bug: 587168
> > Change-Id: I997a8da26f0fe015cc0103b96dcbaa7d40525eb8
> > Reviewed-on: https://chromium-review.googlesource.com/c/1306779
> > Commit-Queue: Livvie Lin <livvielin@chromium.org>
> > Reviewed-by: Mustafa Emre Acer <meacer@chromium.org>
> > Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
> > Reviewed-by: Mike West <mkwst@chromium.org>
> > Reviewed-by: Scott Violet <sky@chromium.org>
> > Reviewed-by: Nate Chapin <japhet@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#614212}
> 
> TBR=meacer@chromium.org, sky@chromium.org, yhirano@chromium.org, japhet@chromium.org, mkwst@chromium.org
> 
> Bug: 587168
> Change-Id: I9ecb83b0e6a5d48cdc9b769b971f5da81c82bb62
> Reviewed-on: https://chromium-review.googlesource.com/c/1366175
> Commit-Queue: Carlos IL <carlosil@chromium.org>
> Reviewed-by: Carlos IL <carlosil@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#616470}

TBR=sky@chromium.org,meacer@chromium.org,yhirano@chromium.org,japhet@chromium.org,mkwst@chromium.org,carlosil@chromium.org,livvielin@chromium.org

Change-Id: Ifab143df9fdcc2c21b585990885c32e9daca4040
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 587168
Reviewed-on: https://chromium-review.googlesource.com/c/1377604
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616632}
20 files changed