Blob support for IDB [Chromium]

webkit/browser/fileapi/local_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_BROWSER_FILEAPI_LOCAL_FILE_STREAM_WRITER_H_
 #define WEBKIT_BROWSER_FILEAPI_LOCAL_FILE_STREAM_WRITER_H_
 
 #include <utility>
 
 #include "base/callback.h"
@@ skipping 12 matching lines @@
 
 namespace fileapi {
 
 // This class is a thin wrapper around net::FileStream for writing local files.
 class WEBKIT_STORAGE_BROWSER_EXPORT_PRIVATE LocalFileStreamWriter
     : public FileStreamWriter {
  public:
   // Creates a writer for the existing file in the path |file_path| starting
   // from |initial_offset|. Uses |task_runner| for async file operations.
   LocalFileStreamWriter(base::TaskRunner* task_runner,
-                        const base::FilePath& file_path, int64 initial_offset);
+                        const base::FilePath& file_path, int64 initial_offset,
+                        bool open_not_create);
   virtual ~LocalFileStreamWriter();
 
   // 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;
 
  private:
   // Opens |file_path_| and if it succeeds, proceeds to InitiateSeek().
@@ skipping 24 matching lines @@
   // Flushes asynchronously to the file.
   int InitiateFlush(const net::CompletionCallback& callback);
   void DidFlush(const net::CompletionCallback& callback, int result);
 
   // Stops the in-flight operation and calls |cancel_callback_| if it has been
   // set by Cancel() for the current operation.
   bool CancelIfRequested();
 
   // Initialization parameters.
   const base::FilePath file_path_;
+  bool open_not_create_;
   const int64 initial_offset_;
   scoped_refptr<base::TaskRunner> task_runner_;
 
   // Current states of the operation.
   bool has_pending_operation_;
   scoped_ptr<net::FileStream> stream_impl_;
   net::CompletionCallback cancel_callback_;
 
   base::WeakPtrFactory<LocalFileStreamWriter> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(LocalFileStreamWriter);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_LOCAL_FILE_STREAM_WRITER_H_