Resubmit of http://codereview.chromium.org/3476002/show but without the crashing bug.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/3618016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61879 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 71 insertions, 0 deletions

diff --git a/webkit/fileapi/file_writer_delegate.h b/webkit/fileapi/file_writer_delegate.h
new file mode 100644
index 0000000..ed35ce6
--- /dev/null
+++ b/webkit/fileapi/file_writer_delegate.h
@@ -0,0 +1,71 @@
+// Copyright (c) 2010 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_FILE_WRITER_DELEGATE_H_
+#define WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
+
+#include "base/file_path.h"
+#include "base/platform_file.h"
+#include "base/ref_counted.h"
+#include "base/scoped_callback_factory.h"
+#include "base/scoped_ptr.h"
+#include "base/task.h"
+#include "base/time.h"
+#include "net/base/file_stream.h"
+#include "net/base/io_buffer.h"
+#include "net/url_request/url_request.h"
+
+namespace fileapi {
+
+class FileSystemOperation;
+
+class FileWriterDelegate : public URLRequest::Delegate {
+ public:
+  FileWriterDelegate(
+      FileSystemOperation* write_operation,
+      int64 offset);
+  virtual ~FileWriterDelegate();
+
+  void Start(base::PlatformFile file, URLRequest* request);
+  base::PlatformFile file() {
+    return file_;
+  }
+
+  virtual void OnReceivedRedirect(
+      URLRequest* request, const GURL& new_url, bool* defer_redirect);
+  virtual void OnAuthRequired(
+      URLRequest* request, net::AuthChallengeInfo* auth_info);
+  virtual void OnCertificateRequested(
+      URLRequest* request, net::SSLCertRequestInfo* cert_request_info);
+  virtual void OnSSLCertificateError(
+      URLRequest* request, int cert_error, net::X509Certificate* cert);
+  virtual void OnResponseStarted(URLRequest* request);
+  virtual void OnReadCompleted(URLRequest* request, int bytes_read);
+
+ private:
+  void Read();
+  void OnDataReceived(int bytes_read);
+  void Write();
+  void OnDataWritten(int write_response);
+  void OnError(base::PlatformFileError error);
+  void OnProgress(int bytes_read, bool done);
+
+  FileSystemOperation* file_system_operation_;
+  base::PlatformFile file_;
+  int64 offset_;
+  base::Time last_progress_event_time_;
+  int bytes_read_backlog_;
+  int bytes_written_;
+  int bytes_read_;
+  scoped_refptr<net::IOBufferWithSize> io_buffer_;
+  scoped_ptr<net::FileStream> file_stream_;
+  URLRequest* request_;
+  base::ScopedCallbackFactory<FileWriterDelegate> callback_factory_;
+  ScopedRunnableMethodFactory<FileWriterDelegate> method_factory_;
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_FILE_WRITER_DELEGATE_H_
+