[Search] Store and recall search terms using NavigationEntry to improve search term extraction

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"
@@ skipping 164 matching lines @@
   //   - this navigation was restored and for some reason the
   //     timestamp wasn't available;
   //   - or this navigation was copied from a foreign session.
   virtual void SetTimestamp(base::Time timestamp) = 0;
   virtual base::Time GetTimestamp() const = 0;
 
   // Used to specify if this entry should be able to access local file://
   // resources.
   virtual void SetCanLoadLocalResources(bool allow) = 0;
   virtual bool GetCanLoadLocalResources() const = 0;
+
+  // Set extra browser data on this NavigationEntry.

[jam, 2013/01/17 16:24:22]

nit: no "browser"

[Mathieu, 2013/01/18 18:38:05]

Done.

+  virtual void SetExtraData(const std::string& key, const string16& data) = 0;
+  virtual const bool GetExtraData(const std::string& key, string16* out_value)
+      const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_