Refactor SSLCertificateErrorPageController

SSLCertificateErrorPageController is no longer only used on SSL errors,
renamed it to SecurityInterstitialErrorPageController, and removed the
net::Error code passed to EnablePageHelperFunctions since it's no
longer used.

Bug: 910794
Change-Id: I718e0fcbcb2643cb0c47818dda1f317aef4e75cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1503910
Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Carlos IL <carlosil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638232}
11 files changed