[cros] Remove Views implementation for login/OOBE.

chrome/browser/policy/resources/enrollment.js

-// Copyright (c) 2011 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.
-
-cr.define('enterpriseEnrollment', function() {
-
-  function showScreen(screen) {
-    var screens = ['login-screen', 'confirmation-screen'];
-    for (var i = 0; i < screens.length; i++) {
-      $(screens[i]).hidden = screens[i] != screen;
-
-      // Hiding an iframe unfortunately doesn't remove it or its contents from
-      // tabbing order. To hack around this:
-      // - Hide the content document (if it exists), so nested elements won't
-      //   receive focus and relinquish focus if they already have it.
-      // - Set tabIndex = -1 on the iframe, so it doesn't get focused itself.
-      //
-      // See https://bugs.webkit.org/show_bug.cgi?id=55861
-      iframes = $(screens[i]).getElementsByTagName('iframe');
-      for (var j = 0; j < iframes.length; j++) {
-        var display = '';
-        if (screens[i] != screen) {
-          display = 'none';
-          iframes[j].tabIndex = -1;
-        } else {
-          display = 'block';
-          iframes[j].removeAttribute('tabIndex');
-        }
-        if (iframes[j].contentDocument && iframes[j].contentDocument.body) {
-          iframes[j].contentDocument.body.style.display = display;
-        }
-      }
-    }
-
-    if (screen === 'confirmation-screen') {
-      // Focus on the submit button when showing the confirmation-screen.
-      $('close').focus();
-    }
-  }
-
-  function showInitialScreen() {
-    showScreen('login-screen');
-    document.addEventListener('keydown', onKeydown);
-    $('gaialogin').contentWindow.addEventListener('keydown', onKeydown);
-  }
-
-  function onKeydown(e) {
-    // Handle ESC key.
-    if (e.keyIdentifier === 'U+001B') {
-      e.stopPropagation();
-      chrome.send("DialogClose", [""]);
-    }
-  }
-
-  function onLoad() {
-    chrome.send('enrollmentScreenReady', []);
-  }
-
-  return {
-    showScreen: showScreen,
-    showInitialScreen: showInitialScreen,
-    onLoad: onLoad
-  };
-});
-
-document.addEventListener('DOMContentLoaded',
-                          enterpriseEnrollment.onLoad);