[FileAPI] Remove Flush() on write completion on SandboxFileSystems

webkit/browser/fileapi/file_writer_delegate.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_FILE_WRITER_DELEGATE_H_
 #define WEBKIT_BROWSER_FILEAPI_FILE_WRITER_DELEGATE_H_
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/url_request/url_request.h"
 #include "webkit/browser/webkit_storage_browser_export.h"
 
 namespace fileapi {
 
 class FileStreamWriter;
 
 class WEBKIT_STORAGE_BROWSER_EXPORT_PRIVATE FileWriterDelegate
     : public net::URLRequest::Delegate {
  public:
+  enum FlushPolicy {
+    FLUSH_ON_COMPLETION,
+    NO_FLUSH_ON_COMPLETION,
+  };
+
   enum WriteProgressStatus {
     SUCCESS_IO_PENDING,
     SUCCESS_COMPLETED,
     ERROR_WRITE_STARTED,
     ERROR_WRITE_NOT_STARTED,
   };
 
   typedef base::Callback<void(base::File::Error result,
                               int64 bytes,
                               WriteProgressStatus write_status)>
       DelegateWriteCallback;
 
-  explicit FileWriterDelegate(scoped_ptr<FileStreamWriter> file_writer);
+  FileWriterDelegate(scoped_ptr<FileStreamWriter> file_writer,
+                     FlushPolicy flush_policy);
   virtual ~FileWriterDelegate();
 
   void Start(scoped_ptr<net::URLRequest> request,
              const DelegateWriteCallback& write_callback);
 
   // Cancels the current write operation.  This will synchronously or
   // asynchronously call the given write callback (which may result in
   // deleting this).
   void Cancel();
 
@@ skipping 17 matching lines @@
       scoped_ptr<net::URLRequest> request,
       base::File::Error error,
       const base::File::Info& file_info);
   void Read();
   void OnDataReceived(int bytes_read);
   void Write();
   void OnDataWritten(int write_response);
   void OnError(base::File::Error error);
   void OnProgress(int bytes_read, bool done);
   void OnWriteCancelled(int status);
-  void FlushForCompletion(base::File::Error error,
-                          int bytes_written,
-                          WriteProgressStatus progress_status);
+  void MaybeFlushForCompletion(base::File::Error error,
+                               int bytes_written,
+                               WriteProgressStatus progress_status);
   void OnFlushed(base::File::Error error,
                  int bytes_written,
                  WriteProgressStatus progress_status,
                  int flush_error);
 
   WriteProgressStatus GetCompletionStatusOnError() const;
 
   DelegateWriteCallback write_callback_;
   scoped_ptr<FileStreamWriter> file_stream_writer_;
   base::Time last_progress_event_time_;
   bool writing_started_;
+  FlushPolicy flush_policy_;
   int bytes_written_backlog_;
   int bytes_written_;
   int bytes_read_;
   scoped_refptr<net::IOBufferWithSize> io_buffer_;
   scoped_refptr<net::DrainableIOBuffer> cursor_;
   scoped_ptr<net::URLRequest> request_;
 
   base::WeakPtrFactory<FileWriterDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FileWriterDelegate);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_FILE_WRITER_DELEGATE_H_