Typecheck chrome://help using CompilerPass.java, everything except dependency to options

chrome/browser/resources/uber/uber.js

 // Copyright (c) 2012 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('uber', function() {
   /**
    * Options for how web history should be handled.
    */
   var HISTORY_STATE_OPTION = {
     PUSH: 1,    // Push a new history state.
@@ skipping 341 matching lines @@
       lastSelected.setAttribute('aria-hidden', 'true');
     }
 
     // Containers that aren't selected have to be hidden so that their
     // content isn't focusable.
     container.hidden = false;
     container.setAttribute('aria-hidden', 'false');
 
     // Trigger a layout after making it visible and before setting
     // the class to 'selected', so that it animates in.
+    /** @suppress {uselessCode} */
     container.offsetTop;
     container.classList.add('selected');
 
     setContentChanging(true);
     adjustToScroll(0);
 
     var selectedFrame = getSelectedIframe().querySelector('iframe');
     uber.invokeMethodOnWindow(selectedFrame.contentWindow, 'frameSelected');
 
     if (historyOption != HISTORY_STATE_OPTION.NONE)
@@ skipping 79 matching lines @@
   }
 
   return {
     onLoad: onLoad,
     onPopHistoryState: onPopHistoryState
   };
 });
 
 window.addEventListener('popstate', uber.onPopHistoryState);
 document.addEventListener('DOMContentLoaded', uber.onLoad);