[Media Gallery] Added code to support mtp device media file system on Windows.

chrome/browser/media_gallery/win/mtp_device_object_entry.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.
+//
+// This struct contains information about the media transfer protocol device
+// (MTP) object entry.
+
+#ifndef CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
+#define CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
+
+#include <vector>
+
+#include "base/string16.h"
+#include "base/time.h"
+
+namespace chrome {
+
+// See comment at top of file for the complete description.

[Ryan Sleevi, 2013/01/09 00:20:36]

While I realize the style guide permits this, you can see in Chromium code no
such occurrences of this pattern. Instead, Chromium code tends to keep the
description of the class with the class itself.

I realize this point may be a bit controversial, and Peter's much more a
style-lawyer than I am, but this has been my first time in Chromium code seeing
this approach, and it was enough to cause me to miss some of the implementation
details and guarantees that you originally had.

[kmadhusu, 2013/01/09 18:11:14]

Fixed.

+struct MTPDeviceObjectEntry {
+  MTPDeviceObjectEntry();  // Necessary for STL.
+  MTPDeviceObjectEntry(const string16& object_id,
+                       const string16& object_name,
+                       bool is_directory,
+                       int64 size,
+                       const base::Time& last_modified_time);
+
+  // The object identifier, e.g. "o299".
+  string16 object_id;
+
+  // Friendly name of the object, e.g. "IMG_9911.jpeg".
+  string16 name;
+
+  // True if the current object is a directory/folder/album content type.
+  bool is_directory;
+
+  // The object file size in bytes, e.g. "882992".
+  int64 size;
+
+  // Last modified time of the object.
+  base::Time last_modified_time;
+};
+
+typedef std::vector<MTPDeviceObjectEntry> MTPDeviceObjectEntries;
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_MEDIA_GALLERY_WIN_MTP_DEVICE_OBJECT_ENTRY_H_