Always create FrameTreeNodes and RenderFrameHosts for every frame.

content/renderer/render_frame_impl.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 37 matching lines @@
   // Creates a new RenderFrame. |render_view| is the RenderView object that this
   // frame belongs to.
   static RenderFrameImpl* Create(RenderViewImpl* render_view, int32 routing_id);
 
   // Used by content_layouttest_support to hook into the creation of
   // RenderFrameImpls.
   static void InstallCreateHook(
       RenderFrameImpl* (*create_render_frame_impl)(RenderViewImpl*, int32));
 
   virtual ~RenderFrameImpl();
+  // TODO(nasko): Remove when no longer needed.
+  // See comment on the implementation of this method for more details.
+  void operator delete(void*);
 
   // TODO(jam): this is a temporary getter until all the code is transitioned
   // to using RenderFrame instead of RenderView.
   RenderViewImpl* render_view() { return render_view_; }
 
   RendererWebCookieJarImpl* cookie_jar() { return &cookie_jar_; }
 
   // Returns the RenderWidget associated with this frame.
   RenderWidget* GetRenderWidget();
 
@@ skipping 278 matching lines @@
 
   // All the registered observers.
   ObserverList<RenderFrameObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_