Start using RenderFrameProxyHost objects.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 9147d17b9fa29be12ebd6ee6990b7ee9dbb0522d..7bf8ecb22c03dc450ac20271dba1303173353875 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -104,6 +104,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   virtual gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible()
       OVERRIDE;
 
+  bool CreateRenderFrame(int parent_routing_id);
+  bool IsRenderFrameLive();
   void Init();
   int routing_id() const { return routing_id_; }
   void OnCreateChildFrame(int new_routing_id,
@@ -368,6 +370,7 @@ class CONTENT_EXPORT RenderFrameHostImpl
 
   int routing_id_;
   bool is_swapped_out_;
+  bool renderer_initialized_;
 
   // When the last BeforeUnload message was sent.
   base::TimeTicks send_before_unload_start_time_;