[DRAFT] Create RenderFrameHostManager.

content/browser/frame_host/interstitial_page_impl.cc

Index: content/browser/frame_host/interstitial_page_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_impl.cc b/content/browser/frame_host/interstitial_page_impl.cc
index 8b249e924ecc4b3d9e983a937c61a4e2400424af..3d3e288a324ca51ace2522a237e92116974e373c 100644
--- a/content/browser/frame_host/interstitial_page_impl.cc
+++ b/content/browser/frame_host/interstitial_page_impl.cc
@@ -237,7 +237,6 @@ void InterstitialPageImpl::Show() {
 
   DCHECK(!render_view_host_);
   render_view_host_ = static_cast<RenderViewHostImpl*>(CreateRenderViewHost());
-  render_view_host_->AttachToFrameTree();
   CreateWebContentsView();
 
   std::string data_url = "data:text/html;charset=utf-8," +
@@ -291,7 +290,7 @@ void InterstitialPageImpl::Hide() {
                  weak_ptr_factory_.GetWeakPtr(),
                  render_view_host_));
   render_view_host_ = NULL;
-  frame_tree_.SwapMainFrame(NULL);
+  //frame_tree_.SwapMainFrame(NULL);
   controller_->delegate()->DetachInterstitialPage();
   // Let's revert to the original title if necessary.
   NavigationEntry* entry = controller_->GetVisibleEntry();