Adds imageWriterPrivate support for Windows

chrome/utility/image_writer/image_writer_handler.h

Index: chrome/utility/image_writer/image_writer_handler.h
diff --git a/chrome/utility/image_writer/image_writer_handler.h b/chrome/utility/image_writer/image_writer_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..5763f96d1969ae4a539304a2b705d46813afe92f
--- /dev/null
+++ b/chrome/utility/image_writer/image_writer_handler.h
@@ -0,0 +1,51 @@
+// 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_HANDLER_H_
+#define CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_HANDLER_H_
+
+#include "chrome/utility/image_writer/image_writer.h"
+#include "chrome/utility/utility_message_handler.h"
+#include "ipc/ipc_message.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace image_writer {
+
+// A handler for messages related to writing images.  This class is added as a
+// handler in chrome::ChromeContentUtilityClient.
+class ImageWriterHandler : public chrome::UtilityMessageHandler {
+ public:
+  ImageWriterHandler();
+  virtual ~ImageWriterHandler();
+
+  // Methods for sending the different messages back to the browser process.
+  // Generally should be called by chrome::image_writer::ImageWriter.
+  virtual void SendSucceeded();
+  virtual void SendCancelled();
+  virtual void SendFailed(const std::string& message);
+  virtual void SendProgress(int64 progress);
+
+ private:
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // Small wrapper for sending on the UtilityProcess.
+  void Send(IPC::Message* msg);
+
+  // Message handlers.
+  void OnWriteStart(const base::FilePath& image, const base::FilePath& device);
+  void OnVerifyStart(const base::FilePath& image, const base::FilePath& device);
+  void OnCancel();
+
+  // Checks if a path is a valid target device.
+  bool IsValidDevice(const base::FilePath& device);
+
+  ImageWriter image_writer_;
+};
+
+}  // namespace image_writer
+
+#endif  // CHROME_UTILITY_IMAGE_WRITER_IMAGE_WRITER_HANDLER_H_