IndexedDB: Fixed support for empty blobs.

content/browser/indexed_db/indexed_db_context_impl.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_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 49 matching lines @@
 
   IndexedDBFactory* GetIDBFactory();
 
   // Disables the exit-time deletion of session-only data.
   void SetForceKeepSessionState() { force_keep_session_state_ = true; }
 
   // IndexedDBContext implementation:
   base::SequencedTaskRunner* TaskRunner() const override;
   std::vector<IndexedDBInfo> GetAllOriginsInfo() override;
   int64 GetOriginDiskUsage(const GURL& origin_url) override;
+  int GetOriginBlobFileCount(const GURL& origin_url) override;
   void DeleteForOrigin(const GURL& origin_url) override;
   void CopyOriginData(const GURL& origin_url,
                       IndexedDBContext* dest_context) override;
   base::FilePath GetFilePathForTesting(
       const std::string& origin_id) const override;
   void SetTaskRunnerForTesting(base::SequencedTaskRunner* task_runner) override;
 
   // Methods called by IndexedDBDispatcherHost for quota support.
   void ConnectionOpened(const GURL& origin_url, IndexedDBConnection* db);
   void ConnectionClosed(const GURL& origin_url, IndexedDBConnection* db);
@@ skipping 76 matching lines @@
   scoped_ptr<std::set<GURL> > origin_set_;
   OriginToSizeMap origin_size_map_;
   OriginToSizeMap space_available_map_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBContextImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_