[chromedriver] Add shadow DOM support to chromedriver.

chrome/test/chromedriver/js/call_function.js

Index: chrome/test/chromedriver/js/call_function.js
diff --git a/chrome/test/chromedriver/js/call_function.js b/chrome/test/chromedriver/js/call_function.js
index f31f95f12cb285e7d0ebfb536d39ce77a01aaacd..a9bde8d0ece1e3bb4a39a6281d5814cfd677d2a5 100644
--- a/chrome/test/chromedriver/js/call_function.js
+++ b/chrome/test/chromedriver/js/call_function.js
@@ -101,7 +101,7 @@ Cache.prototype = {
     if (nodeRoot == document)
       return true;
     else if (SHADOW_DOM_ENABLED && nodeRoot instanceof ShadowRoot)
-      return true;
+      return this.isNodeReachable_(nodeRoot.host);
 
     return false;
   }
@@ -148,7 +148,7 @@ function wrap(value) {
         || (SHADOW_DOM_ENABLED && value instanceof ShadowRoot)) {
       var wrapped = {};
       var root = getNodeRoot(value);
-      wrapped[ELEMENT_KEY] = getPageCache(root).storeItem(value);
+      wrapped[ELEMENT_KEY] = getPageCache().storeItem(value);
       return wrapped;
     }