Flush at the end of local file writing in FileWriter API.

webkit/fileapi/sandbox_file_stream_writer.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 WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
 #define WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
 
 #include "base/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
@@ skipping 16 matching lines @@
   SandboxFileStreamWriter(FileSystemContext* file_system_context,
                           const FileSystemURL& url,
                           int64 initial_offset,
                           const UpdateObserverList& observers);
   virtual ~SandboxFileStreamWriter();
 
   // FileStreamWriter overrides.
   virtual int Write(net::IOBuffer* buf, int buf_len,
                     const net::CompletionCallback& callback) OVERRIDE;
   virtual int Cancel(const net::CompletionCallback& callback) OVERRIDE;
+  virtual int Flush(const net::CompletionCallback& callback) OVERRIDE;
 
   // Used only by tests.
   void set_default_quota(int64 quota) {
     default_quota_ = quota;
   }
 
  private:
   // Performs quota calculation and calls local_file_writer_->Write().
   int WriteInternal(net::IOBuffer* buf, int buf_len,
                     const net::CompletionCallback& callback);
@@ skipping 34 matching lines @@
   int64 default_quota_;
 
   base::WeakPtrFactory<SandboxFileStreamWriter> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxFileStreamWriter);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_