Delete dead error reporting code from the Safe Browsing interstitial

Delete dead error reporting code from the Safe Browsing interstitial

The phishing warning no longer supports error reporting. This CL deletes
the dead code associated with the error reports.

BUG=
R=mattm@chromium.org

Committed: https://crrev.com/a45fa2145d7c9740a4dd06bb8592310d538c866e
Cr-Commit-Position: refs/heads/master@{#295065}

[felt, 2014-09-16 04:26:28]

felt@chromium.org changed reviewers:
+ bauerb@chromium.org

[felt, 2014-09-16 04:26:49]

PTAL. Tiny CL:

bauerb@: chrome/browser/resources/security_warnings/safe_browsing.js
mattm@: chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

[mattm, 2014-09-16 07:22:27]

lgtm

[Bernhard Bauer, 2014-09-16 07:54:59]

LGTM!

[felt, 2014-09-16 14:26:30]

The CQ bit was checked by felt@chromium.org

[commit-bot: I haz the power, 2014-09-16 14:27:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/575723002/1

[commit-bot: I haz the power, 2014-09-16 14:57:04]

Committed patchset #1 (id:1) as b1b83494266ac043564124bd4b412540f0985536

[commit-bot: I haz the power, 2014-09-16 15:01:26]

Patchset 1 (id:??) landed as
https://crrev.com/a45fa2145d7c9740a4dd06bb8592310d538c866e
Cr-Commit-Position: refs/heads/master@{#295065}