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

chrome/browser/resources/options/options_page.js

Index: chrome/browser/resources/options/options_page.js
diff --git a/chrome/browser/resources/options/options_page.js b/chrome/browser/resources/options/options_page.js
index e837c2532440ad11e3a12e27257f9b3cc4c37b07..befb7c813981bc869dfda9aa7f179a426fd178f3 100644
--- a/chrome/browser/resources/options/options_page.js
+++ b/chrome/browser/resources/options/options_page.js
@@ -204,7 +204,7 @@ cr.define('options', function() {
     var container = $('page-container');
     var scrollTop = container.oldScrollTop || 0;
     container.oldScrollTop = undefined;
-    window.scroll(document.documentElement.scrollLeft, scrollTop);
+    window.scroll(scrollLeftForDocument(document), scrollTop);
   };
 
   /**
@@ -611,7 +611,7 @@ cr.define('options', function() {
     if (freeze) {
       // Lock the width, since auto width computation may change.
       container.style.width = window.getComputedStyle(container).width;
-      container.oldScrollTop = document.documentElement.scrollTop;
+      container.oldScrollTop = scrollTopForDocument(document);
       container.classList.add('frozen');
       var verticalPosition =
           container.getBoundingClientRect().top - container.oldScrollTop;
@@ -703,8 +703,8 @@ cr.define('options', function() {
     if (isRTL()) {
       e.style.right = OptionsPage.horizontalOffset + 'px';
     } else {
-      e.style.left = OptionsPage.horizontalOffset -
-          document.documentElement.scrollLeft + 'px';
+      var scrollLeft = scrollLeftForDocument(document);
+      e.style.left = OptionsPage.horizontalOffset - scrollLeft + 'px';
     }
   };