MD Settings: decouple page visibility from settings_ui.html.

chrome/browser/resources/settings/page_visibility.js

+// Copyright 2016 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.
+
+/**
+ * Specifies page visibility in guest mode in cr and cros.
+ * @typedef {{
+ *   advancedSettings: (boolean|undefined),
+ *   appearance: (boolean|undefined|AppearancePageVisibility),
+ *   dateTime: (boolean|undefined|DateTimePageVisibility),
+ *   defaultBrowser: (boolean|undefined),
+ *   downloads: (undefined|DownloadsPageVisibility),
+ *   onStartup: (boolean|undefined),
+ *   passwordsAndForms: (boolean|undefined),
+ *   people: (boolean|undefined),
+ *   privacy: (undefined|PrivacyPageVisibility),
+ *   reset:(boolean|undefined),
+ * }}
+ */
+var GuestModePageVisibility;
+
+/**
+ * @typedef {{
+ *   bookmarksBar: boolean,
+ *   homeButton: boolean,
+ *   pageZoom: boolean,
+ *   setTheme: boolean,
+ *   setWallpaper: boolean,
+ * }}
+ */
+var AppearancePageVisibility;
+
+/**
+ * @typedef {{
+ *   timeZoneSelector: boolean,
+ * }}
+ */
+var DateTimePageVisibility;
+
+/**
+ * @typedef {{
+ *   googleDrive: boolean
+ * }}
+ */
+var DownloadsPageVisibility;
+
+/**
+ * @typedef {{
+ *   networkPrediction: boolean,
+ *   searchPrediction: boolean,
+ * }}
+ */
+var PrivacyPageVisibility;
+
+cr.define('settings', function() {
+
+  /**
+   * Dictionary defining page visibility.
+   * This is only set when in guest mode. All pages are visible when not set
+   * because polymer only notifies after a property is set.
+   * @type {!GuestModePageVisibility}
+   */
+  var pageVisibility = {};
+
+  if (loadTimeData.getBoolean('isGuest')) {
+    // "if not chromeos" and "if chromeos" in two completely separate blocks
+    // to work around closure compiler.
+    // <if expr="not chromeos">
+    pageVisibility = {
+      passwordsAndForms: false,
+      people: false,
+      onStartup: false,
+      reset: false,
+      appearance: false,
+      defaultBrowser: false,
+      advancedSettings: false,
+    };
+    // </if>
+    // <if expr="chromeos">
+    pageVisibility = {
+      passwordsAndForms: false,
+      people: false,
+      onStartup: false,
+      reset: false,
+      appearance: {
+        setWallpaper: false,
+        setTheme: false,
+        homeButton: false,
+        bookmarksBar: false,
+        pageZoom: false,
+      },
+      advancedSettings: true,
+      privacy: {
+        searchPrediction: false,
+        networkPrediction: false,
+      },
+      downloads: {
+        googleDrive: false,
+      },
+    };
+    // </if>
+  }
+
+  return {pageVisibility: pageVisibility};
+});