AppCaches which belong to hosted apps are not protected from deletion

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 IsFileHandler(const std::string& extension_id);
-
-  void AddProtected(const GURL& origin) {
-    protected_.insert(origin);
-  }
-
-  void AddUnlimited(const GURL& origin) {
-    unlimited_.insert(origin);
-  }
-
-  void AddFileHandler(const std::string& id) {
-    file_handlers_.insert(id);
-  }
-
-  void Reset() {
-    protected_.clear();
-    unlimited_.clear();
-    file_handlers_.clear();
-  }
-
- private:
-  std::set<GURL> protected_;
-  std::set<GURL> unlimited_;
-  std::set<std::string> file_handlers_;
-
-  DISALLOW_COPY_AND_ASSIGN(MockExtensionSpecialStoragePolicy);
-};
-
-#endif  // CHROME_BROWSER_EXTENSIONS_MOCK_EXTENSION_SPECIAL_STORAGE_POLICY_H_