Revert of MD Settings: Elim SettingsSubpageBrowsertest and SettingsPageVisibility

chrome/test/data/webui/settings/languages_page_browsertest.js

Index: chrome/test/data/webui/settings/languages_page_browsertest.js
diff --git a/chrome/test/data/webui/settings/languages_page_browsertest.js b/chrome/test/data/webui/settings/languages_page_browsertest.js
index e9ac0523a99356e2a69ec96d334de3d9364a623c..ae7dfab6a551a5c136e3f01768bb1afa2edb1b84 100644
--- a/chrome/test/data/webui/settings/languages_page_browsertest.js
+++ b/chrome/test/data/webui/settings/languages_page_browsertest.js
@@ -27,6 +27,7 @@
   /** @override */
   preLoad: function() {
     SettingsPageBrowserTest.prototype.preLoad.call(this);
+    settingsHidePagesByDefaultForTest = true;
   },
 };
 
@@ -82,7 +83,11 @@
     }
 
     suiteSetup(function() {
-      languagesSection = assert(this.getSection(self.basicPage, 'languages'));
+      var page = self.basicPage;
+      page.set('pageVisibility.languages', true);
+      Polymer.dom.flush();
+
+      languagesSection = assert(this.getSection(page, 'languages'));
       languagesPage = assert(
           languagesSection.querySelector('settings-languages-page'));
       languagesCollapse = languagesPage.$.languagesCollapse;