Revert of Encrypt certificate reports before uploading to HTTP URLs

Revert of Encrypt certificate reports before uploading to HTTP URLs (patchset #20 id:400001 of https://codereview.chromium.org/1083493003/)

Reason for revert:
This CL broke the Win8 GN bot:

http://build.chromium.org/p/chromium.win/builders/Win8%20GN/builds/6514

Original issue's description:
> Encrypt certificate reports before uploading to HTTP URLs
>
> This CL introduces a new protobuf to store encrypted
> CertLoggerRequests. Serialized certificate reports are encrypted with an
> AES-CTR-128-HMAC-SHA256 AEAD (from BoringSSL, thus encrypted reports are
> only supported on BoringSSL platforms) before being uploaded to HTTP
> endpoints. |CertificateErrorReporter::IsHttpUploadUrlSupported| allows
> users of the class to set an HTTP URL if supported.
>
> BUG=461590
>
> Committed: https://crrev.com/0a3351c2a7c81284f82e6531380a21d079f55056
> Cr-Commit-Position: refs/heads/master@{#326876}

TBR=agl@chromium.org,felt@chromium.org,mattm@chromium.org,estark@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=461590
Committed: https://crrev.com/7f606b38af8a2897d0490ede6f1e745c31523409
Cr-Commit-Position: refs/heads/master@{#326878}

[Justin Donnelly, 2015-04-24 21:28:42]

Created Revert of Encrypt certificate reports before uploading to HTTP URLs

[commit-bot: I haz the power, 2015-04-24 21:29:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1073913004/1

[commit-bot: I haz the power, 2015-04-24 21:31:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-24 21:32:05]

Patchset 1 (id:??) landed as
https://crrev.com/7f606b38af8a2897d0490ede6f1e745c31523409
Cr-Commit-Position: refs/heads/master@{#326878}