Remove old session history logic.

content/browser/renderer_host/render_view_host_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_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 17 matching lines @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/common/window_container_type.h"
 #include "net/base/load_states.h"
 #include "third_party/WebKit/public/web/WebAXEnums.h"
 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
 #include "third_party/WebKit/public/web/WebPopupType.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace content {
 
-class PageState;
 struct FrameReplicationState;
 
 // This implements the RenderViewHost interface that is exposed to
 // embedders of content, and adds things only visible to content.
 //
 // The exact API of this object needs to be more thoroughly designed. Right
 // now it mimics what WebContentsImpl exposed, which is a fairly large API and
 // may contain things that are not relevant to a common subset of views. See
 // also the comment in render_view_host_delegate.h about the size and scope of
 // the delegate API.
@@ skipping 179 matching lines @@
       const NativeWebKeyboardEvent& key_event) override;
 
   // IPC message handlers.
   void OnShowView(int route_id,
                   WindowOpenDisposition disposition,
                   const gfx::Rect& initial_rect,
                   bool user_gesture);
   void OnShowWidget(int route_id, const gfx::Rect& initial_rect);
   void OnShowFullscreenWidget(int route_id);
   void OnRenderProcessGone(int status, int error_code);
-  void OnUpdateState(const PageState& state);
   void OnUpdateTargetURL(const GURL& url);
   void OnClose();
   void OnRequestMove(const gfx::Rect& pos);
   void OnDocumentAvailableInMainFrame(bool uses_temporary_zoom_level);
   void OnDidContentsPreferredSizeChange(const gfx::Size& new_size);
   void OnPasteFromSelectionClipboard();
   void OnRouteCloseEvent();
   void OnTakeFocus(bool reverse);
   void OnClosePageACK();
   void OnDidZoomURL(double zoom_level, const GURL& url);
@@ skipping 78 matching lines @@
   bool render_view_ready_on_process_launch_;
 
   base::WeakPtrFactory<RenderViewHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_