Move out DidStartProvisionalLoad from WebContentsImpl into Navigator.

content/browser/frame_host/frame_tree.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_FRAME_TREE_H_
 #define CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 60 matching lines @@
   // frame_id.
   bool IsFirstNavigationAfterSwap() const;
   void OnFirstNavigationAfterSwap(int main_frame_id);
 
   // Frame tree manipulation routines.
   // TODO(creis): These should take in RenderFrameHost routing IDs.
   void AddFrame(int render_frame_host_id,
                 int64 parent_frame_tree_node_id,
                 int64 frame_id,
                 const std::string& frame_name);
-  void RemoveFrame(int64 parent_frame_id, int64 frame_id);
+  void RemoveFrame(RenderFrameHostImpl* render_frame_host,
+                   int64 parent_frame_id,
+                   int64 frame_id);
   void SetFrameUrl(int64 frame_id, const GURL& url);
 
   // Resets the FrameTree and changes RenderFrameHost for the main frame.
   // This destroys most of the frame tree but retains the root node so that
   // navigation state may be kept on it between process swaps. Used to
   // support bookkeeping for top-level navigations.
   //
   // If |main_frame| is NULL, reset tree to initially constructed state.
   //
   // TODO(ajwong): This function should not be given a |main_frame|. This is
@@ skipping 16 matching lines @@
 
  private:
   // Returns the FrameTreeNode with the given renderer-specific |frame_id|.
   // For internal use only.
   // TODO(creis): Replace this with a version that takes in a routing ID.
   FrameTreeNode* FindByFrameID(int64 frame_id);
 
   scoped_ptr<FrameTreeNode> CreateNode(int64 frame_id,
                                        const std::string& frame_name,
                                        int render_frame_host_id,
-                                       Navigator* navigator,
-                                       RenderProcessHost* render_process_host);
+                                       FrameTreeNode* parent_node);
 
   // These delegates are installed into all the RenderViewHosts and
   // RenderFrameHosts that we create.
   RenderFrameHostDelegate* render_frame_delegate_;
   RenderViewHostDelegate* render_view_delegate_;
   RenderWidgetHostDelegate* render_widget_delegate_;
   RenderFrameHostManager::Delegate* manager_delegate_;
 
   scoped_ptr<FrameTreeNode> root_;
 
   base::Callback<void(RenderViewHostImpl*, int64)> on_frame_removed_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameTree);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_H_