Convert //base to use std::unique_ptr

chrome/browser/media_galleries/mac/mtp_device_delegate_impl_mac.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.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_
 
 #include <stdint.h>
 
 #include <list>
 #include <map>
 #include <vector>
 
 #include "base/containers/hash_tables.h"
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
 
 // Delegate for presenting an Image Capture device through the filesystem
 // API. The synthetic filesystem will be rooted at the constructed location,
 // and names of all files notified through the ItemAdded call will be
 // all appear as children of that directory. (ItemAdded calls with directories
 // will be ignored.)
 // Note on thread management: This class is thread-compatible: it can be created
 // on any thread, but then mutates all state on the UI thread. The async
@@ skipping 167 matching lines @@
 
   ReadFileTransactionList read_file_transactions_;
   ReadDirTransactionList read_dir_transactions_;
 
   base::WeakPtrFactory<MTPDeviceDelegateImplMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceDelegateImplMac);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MAC_MTP_DEVICE_DELEGATE_IMPL_MAC_H_