Move the frame tree into the embedder.

Source/web/tests/FrameTestHelpers.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 129 matching lines @@
 void WebViewHelper::reset()
 {
     if (m_webView) {
         m_webView->close();
         m_webView = 0;
     }
 }
 
 WebFrame* TestWebFrameClient::createChildFrame(WebFrame* parent, const WebString& frameName)
 {
-    return WebFrame::create(this);
+    WebFrame* frame = WebFrame::create(this);
+    parent->appendChild(frame);
+    return frame;
 }
 
 void TestWebFrameClient::frameDetached(WebFrame* frame)
 {
+    if (frame->parent())
+        frame->parent()->removeChild(frame);
     frame->close();
 }
 
 
 } // namespace FrameTestHelpers
 } // namespace blink