Implement AutomationNode.querySelector().

extensions/renderer/extension_helper.h

Index: extensions/renderer/extension_helper.h
diff --git a/extensions/renderer/extension_helper.h b/extensions/renderer/extension_helper.h
index 7e660757d6d1c0eeab281efe3bef3b254d5333cb..475c0d2c181cdd21d6bb14387cfd10429b225ddc 100644
--- a/extensions/renderer/extension_helper.h
+++ b/extensions/renderer/extension_helper.h
@@ -7,6 +7,7 @@
 
 #include <vector>
 
+#include "base/memory/scoped_ptr.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/renderer/render_view_observer_tracker.h"
@@ -22,7 +23,9 @@ class ListValue;
 }
 
 namespace extensions {
+class AutomationApiHelper;
 class Dispatcher;
+
 struct Message;
 
 // RenderView-level plumbing for extension features.
@@ -98,6 +101,9 @@ class ExtensionHelper
   // Id number of browser window which RenderView is attached to.
   int browser_window_id_;
 
+  // Renderer hooks for the Automation API.
+  scoped_ptr<AutomationApiHelper> automation_api_helper_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionHelper);
 };