Fix BrowserFrame to construct SslError using the full URL, rather than the host

https://android-git.corp.google.com/g/#/c/133348 changed BrowserFrame to
construct the SslError using only the host. This was done so that we match on
just the host component of the URL when re-using previous decisions in case of
an SSL error. It also means that the browser displays only the host when it
shows the SSL error dialog.

This change fixes BrowserFrame to pass the full URL to SslError. We modify
SslCertLookupTable to keep the existing behaviour regarding matching on only the
host component. There's no need to change Browser to continue displaying only
the host as I think this change was an unintentional side-effect.

Also remove dead code-path in BrowserFrame.reportSslCertError(). This
method is used only with the Chromium HTTP stack. This code was added
in https://android-git.corp.google.com/g/#/c/121023.

No functional change.

Bug: 5410252
Change-Id: Ief2dbf4558095fb6fa7ab0caac7d37fa4f640b66