Move the security interstitials into a single folder

chrome/browser/resources/safe_browsing/safe_browsing_v3.js

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Must match the commands handled by SafeBrowsingBlockingPage::CommandReceived.
-var SB_CMD_DO_REPORT = 'doReport';
-var SB_CMD_DONT_REPORT = 'dontReport';
-var SB_CMD_EXPANDED_SEE_MORE = 'expandedSeeMore';
-var SB_CMD_LEARN_MORE_2 = 'learnMore2';
-var SB_CMD_PROCEED = 'proceed';
-var SB_CMD_REPORT_ERROR = 'reportError';
-var SB_CMD_SHOW_DIAGNOSTIC = 'showDiagnostic';
-var SB_CMD_SHOW_PRIVACY = 'showPrivacy';
-var SB_CMD_TAKE_ME_BACK = 'takeMeBack';
-
-// Other constants defined in safe_browsing_blocking_page.cc.
-var SB_BOX_CHECKED = 'boxchecked';
-var SB_DISPLAY_CHECK_BOX = 'displaycheckbox';
-
-// This sets up the Extended Safe Browsing Reporting opt-in.
-function setupCheckbox() {
-  if (loadTimeData.getBoolean('ssl') || loadTimeData.getBoolean('phishing') ||
-      !loadTimeData.getBoolean(SB_DISPLAY_CHECK_BOX)) {
-    return;
-  }
-
-  $('opt-in-label').innerHTML = loadTimeData.getString('optInLink');
-  $('opt-in-checkbox').checked = loadTimeData.getBoolean(SB_BOX_CHECKED);
-  $('malware-opt-in').classList.remove('hidden');
-
-  $('opt-in-checkbox').addEventListener('click', function() {
-    sendCommand(
-        $('opt-in-checkbox').checked ? SB_CMD_DO_REPORT : SB_CMD_DONT_REPORT);
-  });
-}