Send session history offset and length parameters in the Navigate message to...

chrome/browser/renderer_host/render_view_host_delegate.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 185 matching lines @@
                              int number_of_matches,
                              const gfx::Rect& selection_rect,
                              int active_match_ordinal,
                              bool final_update) = 0;
 
     // Navigate to the history entry for the given offset from the current
     // position within the NavigationController.  Makes no change if offset is
     // not valid.
     virtual void GoToEntryAtOffset(int offset) = 0;
 
-    // The page requests the size of the back and forward lists
-    // within the NavigationController.
-    virtual void GetHistoryListCount(int* back_list_count,
-                                     int* forward_list_count) = 0;
-
     // Notification when default plugin updates status of the missing plugin.
     virtual void OnMissingPluginStatus(int status) = 0;
 
     // Notification from the renderer that a plugin instance has crashed.
     //
     // BrowserIntegration isn't necessarily the best place for this, if you
     // need to implement this function somewhere that doesn't need any other
     // BrowserIntegration callbacks, feel free to move it elsewhere.
     virtual void OnCrashedPlugin(const FilePath& plugin_path) = 0;
 
@@ skipping 413 matching lines @@
   virtual bool IsExternalTabContainer() const;
 
   // The RenderView has inserted one css file into page.
   virtual void DidInsertCSS() {}
 
   // A different node in the page got focused.
   virtual void FocusedNodeChanged() {}
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_DELEGATE_H_