Apply content-security-policy to the HTML options page. This is a

chrome/browser/resources/options/import_data_overlay.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('options', function() {
-  var OptionsPage = options.OptionsPage;
-
-  /**
-   * ImportDataOverlay class
-   * Encapsulated handling of the 'Import Data' overlay page.
-   * @class
-   */
-  function ImportDataOverlay() {
-    OptionsPage.call(this,
-                     'importData',
-                     templateData.importDataOverlayTabTitle,
-                     'import-data-overlay');
-  }
-
-  cr.addSingletonGetter(ImportDataOverlay);
-
-  ImportDataOverlay.prototype = {
-    // Inherit from OptionsPage.
-    __proto__: OptionsPage.prototype,
-
-    /**
-     * Initialize the page.
-     */
-    initializePage: function() {
-      // Call base class implementation to start preference initialization.
-      OptionsPage.prototype.initializePage.call(this);
-
-      var self = this;
-      var checkboxes =
-          document.querySelectorAll('#import-checkboxes input[type=checkbox]');
-      for (var i = 0; i < checkboxes.length; i++) {
-        checkboxes[i].onchange = function() {
-          self.validateCommitButton_();
-        };
-      }
-
-      $('import-browsers').onchange = function() {
-        self.updateCheckboxes_();
-        self.validateCommitButton_();
-      };
-
-      $('import-data-commit').onclick = function() {
-        chrome.send('importData', [
-            String($('import-browsers').selectedIndex),
-            String($('import-history').checked),
-            String($('import-favorites').checked),
-            String($('import-passwords').checked),
-            String($('import-search').checked)]);
-      };
-
-      $('import-data-cancel').onclick = function() {
-        ImportDataOverlay.dismiss();
-      };
-
-      // Form controls are disabled until the profile list has been loaded.
-      self.setControlsSensitive_(false);
-    },
-
-    /**
-     * Set enabled and checked state of the commit button.
-     * @private
-     */
-    validateCommitButton_: function() {
-      var somethingToImport =
-          $('import-history').checked || $('import-favorites').checked ||
-          $('import-passwords').checked || $('import-search').checked;
-      $('import-data-commit').disabled = !somethingToImport;
-    },
-
-    /**
-     * Sets the sensitivity of all the checkboxes and the commit button.
-     * @private
-     */
-    setControlsSensitive_: function(sensitive) {
-      var checkboxes =
-          document.querySelectorAll('#import-checkboxes input[type=checkbox]');
-      for (var i = 0; i < checkboxes.length; i++)
-        this.setUpCheckboxState_(checkboxes[i], sensitive);
-      $('import-data-commit').disabled = !sensitive;
-    },
-
-    /**
-     * Set enabled and checked states a checkbox element.
-     * @param {Object} checkbox A checkbox element.
-     * @param {boolean} enabled The enabled state of the chekbox.
-     * @private
-     */
-    setUpCheckboxState_: function(checkbox, enabled) {
-      checkbox.disabled = !enabled;
-      checkbox.checked = enabled;
-    },
-
-    /**
-     * Update the enabled and checked states of all checkboxes.
-     * @private
-     */
-    updateCheckboxes_: function() {
-      var index = $('import-browsers').selectedIndex;
-      var browserProfile;
-      if (this.browserProfiles.length > index)
-        browserProfile = this.browserProfiles[index];
-      var importOptions = ['history', 'favorites', 'passwords', 'search'];
-      for (var i = 0; i < importOptions.length; i++) {
-        var checkbox = $('import-' + importOptions[i]);
-        this.setUpCheckboxState_(checkbox,
-            browserProfile ? browserProfile[importOptions[i]] : false);
-      }
-    },
-
-    /**
-     * Update the supported browsers popup with given entries.
-     * @param {array} browsers List of supported browsers name.
-     * @private
-     */
-    updateSupportedBrowsers_: function(browsers) {
-      this.browserProfiles = browsers;
-      var browserSelect = $('import-browsers');
-      browserSelect.remove(0);  // Remove the 'Loading...' option.
-      browserSelect.textContent = '';
-      var browserCount = browsers.length;
-
-      if (browserCount == 0) {
-        var option = new Option(templateData.noProfileFound, 0);
-        browserSelect.appendChild(option);
-
-        this.setControlsSensitive_(false);
-      } else {
-        this.setControlsSensitive_(true);
-        for (var i = 0; i < browserCount; i++) {
-          var browser = browsers[i]
-          var option = new Option(browser['name'], browser['index']);
-          browserSelect.appendChild(option);
-        }
-
-        this.updateCheckboxes_();
-        this.validateCommitButton_();
-      }
-    },
-  };
-
-  /**
-   * Update the supported browsers popup with given entries.
-   * @param {array} list of supported browsers name.
-   */
-  ImportDataOverlay.updateSupportedBrowsers = function(browsers) {
-    ImportDataOverlay.getInstance().updateSupportedBrowsers_(browsers);
-  };
-
-  /**
-   * Update the UI to reflect whether an import operation is in progress.
-   * @param {boolean} state True if an import operation is in progress.
-   */
-  ImportDataOverlay.setImportingState = function(state) {
-    if (state) {
-      var checkboxes =
-          document.querySelectorAll('#import-checkboxes input[type=checkbox]');
-      for (var i = 0; i < checkboxes.length; i++) {
-        checkboxes[i].disabled = true;
-      }
-    } else {
-      ImportDataOverlay.getInstance().updateCheckboxes_();
-    }
-    $('import-browsers').disabled = state;
-    $('import-throbber').style.visibility = state ? "visible" : "hidden";
-    ImportDataOverlay.getInstance().validateCommitButton_();
-  };
-
-  /**
-   * Remove the import overlay from display.
-   */
-  ImportDataOverlay.dismiss = function() {
-    ImportDataOverlay.setImportingState(false);
-    OptionsPage.closeOverlay();
-  };
-
-  // Export
-  return {
-    ImportDataOverlay: ImportDataOverlay
-  };
-});