[ServiceWorkerCache] Implement storage::QuotaClient

storage/browser/quota/quota_client.h

 // Copyright 2013 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 STORAGE_BROWSER_QUOTA_QUOTA_CLIENT_H_
 #define STORAGE_BROWSER_QUOTA_QUOTA_CLIENT_H_
 
 #include <list>
 #include <set>
 #include <string>
@@ skipping 18 matching lines @@
 
   virtual ~QuotaClient() {}
 
   enum ID {
     kUnknown = 1 << 0,
     kFileSystem = 1 << 1,
     kDatabase = 1 << 2,
     kAppcache = 1 << 3,
     kIndexedDatabase = 1 << 4,
     kServiceWorker = 1 << 5,
+    kServiceWorkerCache = 1 << 6,
     kAllClientsMask = -1,
   };
 
   virtual ID id() const = 0;
 
   // Called when the quota manager is destroyed.
   virtual void OnQuotaManagerDestroyed() = 0;
 
   // Called by the QuotaManager.
   // Gets the amount of data stored in the storage specified by
@@ skipping 24 matching lines @@
 
   virtual bool DoesSupport(StorageType type) const = 0;
 };
 
 // TODO(dmikurube): Replace it to std::vector for efficiency.
 typedef std::list<QuotaClient*> QuotaClientList;
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_QUOTA_QUOTA_CLIENT_H_