Session-only local storage cleared on exit.

chrome/browser/extensions/mock_extension_special_storage_policy.h

 // Copyright (c) 2011 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_EXTENSIONS_MOCK_EXTENSION_SPECIAL_STORAGE_POLICY_H_
 #define CHROME_BROWSER_EXTENSIONS_MOCK_EXTENSION_SPECIAL_STORAGE_POLICY_H_
 #pragma once
 
 #include <set>
 #include <string>
 
 #include "chrome/browser/extensions/extension_special_storage_policy.h"
 #include "googleurl/src/gurl.h"
 
 // This class is the same as MockSpecialStoragePolicy (in
 // webkit/quota/mock_special_storage_policy.h), but it inherits
 // ExtensionSpecialStoragePolicy instead of quota::SpecialStoragePolicy.
 class MockExtensionSpecialStoragePolicy : public ExtensionSpecialStoragePolicy {
  public:
   MockExtensionSpecialStoragePolicy();
   virtual ~MockExtensionSpecialStoragePolicy();
 
   virtual bool IsStorageProtected(const GURL& origin);
   virtual bool IsStorageUnlimited(const GURL& origin);
+  virtual bool IsStorageSessionOnly(const GURL& origin);
   virtual bool IsFileHandler(const std::string& extension_id);
 
   void AddProtected(const GURL& origin) {
     protected_.insert(origin);
   }
 
   void AddUnlimited(const GURL& origin) {
     unlimited_.insert(origin);
   }
 
+  void AddSessionOnly(const GURL& origin) {
+    session_only_.insert(origin);
+  }
+
   void AddFileHandler(const std::string& id) {
     file_handlers_.insert(id);
   }
 
   void Reset() {
     protected_.clear();
     unlimited_.clear();
+    session_only_.clear();
     file_handlers_.clear();
   }
 
  private:
   std::set<GURL> protected_;
   std::set<GURL> unlimited_;
+  std::set<GURL> session_only_;
   std::set<std::string> file_handlers_;
 
   DISALLOW_COPY_AND_ASSIGN(MockExtensionSpecialStoragePolicy);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_MOCK_EXTENSION_SPECIAL_STORAGE_POLICY_H_