[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 6ac984cb6b6d6926d85a6e584f11fd57d76463d9..3f872938a158c9122f09f2aa7c638d2cc6c1c274 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -46,8 +46,14 @@ 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(
@@ -55,6 +61,15 @@ 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_;
+  }
+
   // 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_; }
@@ -325,6 +340,18 @@ class CONTENT_EXPORT RenderFrameImpl
   void AddObserver(RenderFrameObserver* observer);
   void RemoveObserver(RenderFrameObserver* observer);
 
+  // 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_;