QuotaManager: Return the remaining free disk space as quota.

webkit/quota/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 WEBKIT_QUOTA_SPECIAL_STORAGE_POLICY_H_
 #define WEBKIT_QUOTA_SPECIAL_STORAGE_POLICY_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
@@ skipping 20 matching lines @@
   };
 
   SpecialStoragePolicy();
 
   // Protected storage is not subject to removal by the browsing data remover.
   virtual bool IsStorageProtected(const GURL& origin) = 0;
 
   // Unlimited storage is not subject to 'quotas'.
   virtual bool IsStorageUnlimited(const GURL& origin) = 0;
 
+  // Installed apps have access to the size of the remaining disk capacity.
+  virtual bool IsInstalledApp(const GURL& origin) = 0;
+
   // Checks if extension identified with |extension_id| is registered as
   // file handler.
   virtual bool IsFileHandler(const std::string& extension_id) = 0;
 
   // Some origins are only allowed to store session-only data which is deleted
   // when the session ends.
   virtual bool IsStorageSessionOnly(const GURL& origin) = 0;
 
   // Returns true if some origins are only allowed session-only storage.
   virtual bool HasSessionOnlyOrigins() = 0;
 
   // Adds/removes an observer, the policy does not take
   // ownership of the observer. Should only be called on the IO thread.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
  protected:
   friend class base::RefCountedThreadSafe<SpecialStoragePolicy>;
   virtual ~SpecialStoragePolicy();
   void NotifyObservers();
 
   ObserverList<Observer> observers_;
 };
 
 }  // namespace quota
 
 #endif  // WEBKIT_QUOTA_SPECIAL_STORAGE_POLICY_H_