Introduce content::PageState

content/public/browser/navigation_entry.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_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_
 
 #include <string>
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/string16.h"
 #include "base/time.h"
 #include "content/common/content_export.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/common/page_type.h"
 #include "content/public/common/referrer.h"
 
 class GURL;
 
 namespace content {
 
+class PageState;
 struct FaviconStatus;
 struct SSLStatus;
 
 // A NavigationEntry is a data structure that captures all the information
 // required to recreate a browsing state. This includes some opaque binary
 // state as provided by the WebContentsImpl as well as some clear text title and
 // URL which is used for our user interface.
 class NavigationEntry {
  public:
   virtual ~NavigationEntry() {}
@@ skipping 36 matching lines @@
   virtual void SetVirtualURL(const GURL& url) = 0;
   virtual const GURL& GetVirtualURL() const = 0;
 
   // The title as set by the page. This will be empty if there is no title set.
   // The caller is responsible for detecting when there is no title and
   // displaying the appropriate "Untitled" label if this is being displayed to
   // the user.
   virtual void SetTitle(const string16& title) = 0;
   virtual const string16& GetTitle() const = 0;
 
+  // XXX
   // Content state is an opaque blob created by WebKit that represents the
   // state of the page. This includes form entries and scroll position for each
   // frame. We store it so that we can supply it back to WebKit to restore form
   // state properly when the user goes back and forward.
   //
   // WARNING: This state is saved to the file and used to restore previous
   // states. If the format is modified in the future, we should still be able to
   // deal with older versions.
-  virtual void SetContentState(const std::string& state) = 0;
-  virtual const std::string& GetContentState() const = 0;
+  virtual void SetPageState(const PageState& state) = 0;
+  virtual const PageState& GetPageState() const = 0;
 
   // Describes the current page that the tab represents. This is the ID that the
   // renderer generated for the page and is how we can tell new versus
   // renavigations.
   virtual void SetPageID(int page_id) = 0;
   virtual int32 GetPageID() const = 0;
 
   // Page-related helpers ------------------------------------------------------
 
   // Returns the title to be displayed on the tab. This could be the title of
@@ skipping 96 matching lines @@
   virtual void SetExtraData(const std::string& key, const string16& data) = 0;
   // If present, fills the |data| present at the specified |key|.
   virtual bool GetExtraData(const std::string& key, string16* data) const = 0;
   // Removes the data at the specified |key|.
   virtual void ClearExtraData(const std::string& key) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_