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 b554511c13d7140f2730d168aab4ab12c184e2cc..a7fced4b06ccd42c11a63086608faaa240208b55 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -73,6 +73,8 @@ class CONTENT_EXPORT RenderFrameHostImpl : public RenderFrameHost {
   // IPC::Listener
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
+  bool CreateRenderFrame(int parent_routing_id);

[ncarter (slow), 2014/06/25 01:07:56]

A comment for this function that helps clarify exactly what |parent_routing_id|
means would be useful (e.g., how is it different from
GetParent()->GetRoutingID() ?)

+  bool IsRenderFrameLive();
   void Init();
   int routing_id() const { return routing_id_; }
   void OnCreateChildFrame(int new_routing_id,
@@ -84,6 +86,7 @@ class CONTENT_EXPORT RenderFrameHostImpl : public RenderFrameHost {
   // TODO(nasko): The RenderWidgetHost will be owned by RenderFrameHost in
   // the future, so update this accessor to return the right pointer.
   RenderWidgetHostImpl* GetRenderWidgetHost();
+  bool has_received_swap_out_ack() { return has_received_swap_out_ack_; }
 
   // This function is called when this is a swapped out RenderFrameHost that
   // lives in the same process as the parent frame. The
@@ -298,6 +301,8 @@ class CONTENT_EXPORT RenderFrameHostImpl : public RenderFrameHost {
 
   int routing_id_;
   bool is_swapped_out_;
+  bool renderer_initialized_;
+  bool has_received_swap_out_ack_;
 
   // When the last BeforeUnload message was sent.
   base::TimeTicks send_before_unload_start_time_;