Make chrome/ be documentElement/body agnostic with regards to scrollTop/Left

chrome/browser/resources/ntp_android/ntp_android.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.
 
 // File Description:
 //     Contains all the necessary functions for rendering the NTP on mobile
 //     devices.
 
 /**
  * The event type used to determine when a touch starts.
@@ skipping 2135 matching lines @@
   function updatePaneOnHash() {
     var paneIndex = getPaneIndexFromHash();
     var pane = panes[paneIndex];
 
     if (currentPane)
       currentPane.classList.remove('selected');
     pane.classList.add('selected');
     currentPane = pane;
     currentPaneIndex = paneIndex;
 
-    document.documentElement.scrollTop = 0;
+    setScrollTopForDocument(document, 0);
 
     var panelPrefix = sectionPrefixes[paneIndex];
     var title = templateData[panelPrefix + '_document_title'];
     if (!title)
       title = templateData['title'];
     document.title = title;
 
     sendNTPTitleLoadedNotification();
 
     // TODO (dtrainor): Could potentially add logic to reset the bookmark state
@@ skipping 556 matching lines @@
 // NTP Entry point.
 /////////////////////////////////////////////////////////////////////////////
 
 /*
  * Handles initializing the UI when the page has finished loading.
  */
 window.addEventListener('DOMContentLoaded', function(evt) {
   ntp.init();
   $('content-area').style.display = 'block';
 });