[DRAFT] Create RenderFrameHostManager.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 5c81cd15106424d41c551f690c26955112dfe835..183f7199d470c39c72333d248cb5ea8196ca6429 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -21,8 +21,14 @@ class CONTENT_EXPORT RenderFrameImpl
  public:
   // Creates a new RenderFrame. |render_view| is the RenderView object that this
   // frame belongs to.
+  // Callers *must* call set_web_frame immediately after creation.
+  // TODO(creis): We should structure this so that set_web_frame isn't needed.
   static RenderFrameImpl* Create(RenderViewImpl* render_view, int32 routing_id);
 
+  // Look up the RenderFrameImpl for the given WebFrame.
+  // TODO(creis): I don't think we need this long term.
+  static RenderFrameImpl* FindByWebFrame(blink::WebFrame* web_frame);
+
   // Used by content_layouttest_support to hook into the creation of
   // RenderFrameImpls.
   static void InstallCreateHook(
@@ -30,6 +36,15 @@ class CONTENT_EXPORT RenderFrameImpl
 
   virtual ~RenderFrameImpl();
 
+  void set_web_frame(blink::WebFrame* web_frame) {
+    DCHECK(!frame_);
+    frame_ = web_frame;
+  }
+
+  bool is_swapped_out() const {
+    return is_swapped_out_;
+  }
+
   // IPC::Sender
   virtual bool Send(IPC::Message* msg) OVERRIDE;
 
@@ -187,6 +202,18 @@ class CONTENT_EXPORT RenderFrameImpl
  private:
   int GetRoutingID() const;
 
+  // IPC message handlers ------------------------------------------------------
+  //
+  // The documentation for these functions should be in
+  // content/common/*_messages.h for the message that the function is handling.
+
+  void OnSwapOut();
+
+  // TODO(creis): Make sure that WebFrame won't be deleted before we are.
+  // We need a sane way to act on our WebFrame when IPC messages are received.
+  // Currently, we expect set_web_frame to be called shortly after creation.
+  blink::WebFrame* frame_;
+
   RenderViewImpl* render_view_;
   int routing_id_;
   bool is_swapped_out_;