Remove old session history logic.

content/browser/web_contents/web_contents_impl.h

 // Copyright (c) 2012 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_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 495 matching lines @@
                          const IPC::Message& message) override;
   // RenderFrameHostDelegate has the same method, so list it there because this
   // interface is going away.
   // WebContents* GetAsWebContents() override;
   void RenderViewCreated(RenderViewHost* render_view_host) override;
   void RenderViewReady(RenderViewHost* render_view_host) override;
   void RenderViewTerminated(RenderViewHost* render_view_host,
                             base::TerminationStatus status,
                             int error_code) override;
   void RenderViewDeleted(RenderViewHost* render_view_host) override;
-  void UpdateState(RenderViewHost* render_view_host,
-                   const PageState& page_state) override;
   void UpdateTargetURL(RenderViewHost* render_view_host,
                        const GURL& url) override;
   void Close(RenderViewHost* render_view_host) override;
   void RequestMove(const gfx::Rect& new_bounds) override;
   void DidCancelLoading() override;
   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
   void RouteCloseEvent(RenderViewHost* rvh) override;
   bool DidAddMessageToConsole(int32_t level,
                               const base::string16& message,
                               int32_t line_no,
@@ skipping 986 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_