Adds imageWriterPrivate support for Windows

chrome/browser/image_writer/image_writer.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

[jam, 2013/11/21 19:36:41]

here and in other files, the new copyright header is at
http://www.chromium.org/developers/coding-style#TOC-File-headers, please use
that (i.e. no "(c)"


also, feel free to add OWNERS files with your name in the new directories you've
created

[Drew Haven, 2013/11/26 02:10:43]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_IMAGE_WRITER_IMAGE_WRITER_H_
+#define CHROME_BROWSER_IMAGE_WRITER_IMAGE_WRITER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "base/threading/sequenced_worker_pool.h"
+#include "content/public/browser/utility_process_host_client.h"
+
+// Decodes an image in a sandboxed process.

[jam, 2013/11/21 19:36:41]

update

[Drew Haven, 2013/11/26 02:10:43]

Done.

+class ImageWriter : public content::UtilityProcessHostClient {
+ public:
+  class Delegate {
+   public:
+    // Called when image is decoded.
+    // |writer| is used to identify the image in case of decoding several
+    // images simultaneously.
+    virtual void OnWriteImageSucceeded() = 0;
+
+    // Called when decoding image failed. Delegate can do some cleanup in
+    // this handler.
+    virtual void OnWriteImageFailed(const std::string& message) = 0;
+
+    virtual void OnWriteImageProgress(int progress) = 0;
+
+   protected:
+    virtual ~Delegate() {}
+  };
+
+  ImageWriter(Delegate* delegate,
+              const base::FilePath& source,
+              const base::FilePath& target);
+
+  void Start(scoped_refptr<base::SequencedTaskRunner> task_runner);
+
+  // Overidden from UtilityProcessHostClient:
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;

[jam, 2013/11/21 19:36:41]

nit: put in private section

[Drew Haven, 2013/11/26 02:10:43]

Done.

+
+ private:
+  // It's a reference counted object, so destructor is private.
+  virtual ~ImageWriter();
+
+  // IPC message handlers.
+  void OnWriteImageSucceeded();
+  void OnWriteImageFailed(const std::string& message);
+  void OnWriteImageProgress(int progress);
+
+  void StartWriteInUtilityProcess();
+
+  Delegate* delegate_;
+  base::FilePath source_;
+  base::FilePath target_;
+  scoped_refptr<base::SequencedTaskRunner> task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(ImageWriter);
+};
+
+#endif  // CHROME_BROWSER_IMAGE_WRITER_IMAGE_WRITER_H_