[DRAFT] Create RenderFrameHostManager.

content/browser/frame_host/navigation_entry_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "content/browser/site_instance_impl.h"
@@ skipping 198 matching lines @@
 
   // Whether this (pending) navigation should clear the session history. Resets
   // to false after commit.
   bool should_clear_history_list() const {
     return should_clear_history_list_;
   }
   void set_should_clear_history_list(bool should_clear_history_list) {
     should_clear_history_list_ = should_clear_history_list;
   }
 
+  int64 frame_tree_node_id() const {
+    return frame_tree_node_id_;
+  }
+  void set_frame_tree_node_id(int64 frame_tree_node_id) {
+    frame_tree_node_id_ = frame_tree_node_id;
+  }
+
  private:
   // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
   // Session/Tab restore save portions of this class so that it can be recreated
   // later. If you add a new field that needs to be persisted you'll have to
   // update SessionService/TabRestoreService and Android WebView
   // state_serializer.cc appropriately.
   // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 
   // See the accessors above for descriptions.
   int unique_id_;
@@ skipping 13 matching lines @@
   PageTransition transition_type_;
   GURL user_typed_url_;
   bool has_post_data_;
   int64 post_id_;
   RestoreType restore_type_;
   GURL original_request_url_;
   bool is_overriding_user_agent_;
   base::Time timestamp_;
   int http_status_code_;
 
+  // TODO(creis): Persist frame tree node ID.  This belongs on
+  // FrameNavigationEntry.
+  int64 frame_tree_node_id_;
+
   // This member is not persisted with session restore because it is transient.
   // If the post request succeeds, this field is cleared since the same
   // information is stored in |content_state_| above. It is also only shallow
   // copied with compiler provided copy constructor.
   // Cleared in |ResetForCommit|.
   scoped_refptr<const base::RefCountedMemory> browser_initiated_post_data_;
 
   // This is also a transient member (i.e. is not persisted with session
   // restore). The screenshot of a page is taken when navigating away from the
   // page. This screenshot is displayed during an overscroll-navigation
@@ skipping 65 matching lines @@
   // persisted, unless specific data is taken out/put back in at save/restore
   // time (see TabNavigation for an example of this).
   std::map<std::string, string16> extra_data_;
 
   // Copy and assignment is explicitly allowed for this class.
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_ENTRY_IMPL_H_