Adds imageWriterPrivate support for Windows

chrome/utility/image_writer/image_writer.h

Index: chrome/utility/image_writer/image_writer.h
diff --git a/chrome/utility/image_writer/image_writer.h b/chrome/utility/image_writer/image_writer.h
new file mode 100644
index 0000000000000000000000000000000000000000..8a9fd5bb318cf655d3c897c608c4c4fbe0f853be
--- /dev/null
+++ b/chrome/utility/image_writer/image_writer.h
@@ -0,0 +1,63 @@
+// Copyright 2014 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 CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
+#define CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/files/file_path.h"
+#include "base/memory/weak_ptr.h"
+
+namespace image_writer {
+
+class ImageWriterHandler;
+
+// Manages a write within the utility thread.  This class holds all the state
+// around the writing and communicates with the ImageWriterHandler to dispatch
+// messages.
+class ImageWriter : public base::SupportsWeakPtr<ImageWriter> {
+ public:
+  explicit ImageWriter(ImageWriterHandler* handler);
+  virtual ~ImageWriter();
+
+  // Starts a write from |image_path| to |device_path|.
+  void Write(const base::FilePath& image_path,
+             const base::FilePath& device_path);
+  // Starts verifying that |image_path| and |device_path| have the same size and
+  // contents.
+  void Verify(const base::FilePath& image_path,
+              const base::FilePath& device_path);
+  // Cancels any pending writes or verifications.
+  void Cancel();
+
+  // Returns whether an operation is in progress.
+  bool IsRunning() const;
+
+ private:
+  // Convenience wrappers.
+  void PostTask(const base::Closure& task);
+  void PostProgress(int64 progress);
+  void Error(const std::string& message);
+
+  // Work loops.
+  void WriteChunk();
+  void VerifyChunk();
+
+  // Cleans up file handles.
+  void CleanUp();
+
+  base::FilePath image_path_;
+  base::FilePath device_path_;
+
+  base::PlatformFile image_file_;
+  base::PlatformFile device_file_;
+  int64 bytes_processed_;
+
+  ImageWriterHandler* handler_;
+};
+
+}  // namespace image_writer
+
+#endif  // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_H_