Revert of [chromedriver] Add shadow DOM support to chromedriver.

chrome/test/chromedriver/js/call_function.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.
 
 /**
  * Enum for WebDriver status codes.
  * @enum {number}
  */
 var StatusCode = {
   STALE_ELEMENT_REFERENCE: 10,
@@ skipping 83 matching lines @@
   /**
     * @private
     * @param {!Node} node The node to check.
     * @return {boolean} If the nodes is reachable.
     */
   isNodeReachable_: function(node) {
     var nodeRoot = getNodeRoot(node);
     if (nodeRoot == document)
       return true;
     else if (SHADOW_DOM_ENABLED && nodeRoot instanceof ShadowRoot)
-      return this.isNodeReachable_(nodeRoot.host);
+      return true;
 
     return false;
   }
 };
 
 /**
  * Returns the root element of the node.  Found by traversing parentNodes until
  * a node with no parent is found.  This node is considered the root.
  * @param {!Node} node The node to find the root element for.
  * @return {!Node} The root node.
@@ skipping 26 matching lines @@
  * @param {*} value The value to wrap.
  * @return {*} The wrapped value.
  */
 function wrap(value) {
   if (typeof(value) == 'object' && value != null) {
     var nodeType = value['nodeType'];
     if (nodeType == NodeType.ELEMENT || nodeType == NodeType.DOCUMENT
         || (SHADOW_DOM_ENABLED && value instanceof ShadowRoot)) {
       var wrapped = {};
       var root = getNodeRoot(value);
-      wrapped[ELEMENT_KEY] = getPageCache().storeItem(value);
+      wrapped[ELEMENT_KEY] = getPageCache(root).storeItem(value);
       return wrapped;
     }
 
     var obj = (typeof(value.length) == 'number') ? [] : {};
     for (var prop in value)
       obj[prop] = wrap(value[prop]);
     return obj;
   }
   return value;
 }
@@ skipping 60 matching lines @@
     var returnValue = wrap(func.apply(null, unwrap(args, cache)));
   } catch (error) {
     status = error.code || StatusCode.UNKNOWN_ERROR;
     var returnValue = error.message;
   }
   return {
       status: status,
       value: returnValue
   }
 }