Use a direct include of strings headers in chrome/browser/media_galleries/.

chrome/browser/media_galleries/win/mtp_device_object_entry.h

 // Copyright (c) 2013 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_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_WIN_MTP_DEVICE_OBJECT_ENTRY_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/time.h"
 
 namespace chrome {
 
 // MTPDeviceObjectEntry contains the media transfer protocol device object
 // property values that are obtained using
 // IPortableDeviceProperties::GetValues().
 struct MTPDeviceObjectEntry {
   MTPDeviceObjectEntry();  // Necessary for STL.
   MTPDeviceObjectEntry(const string16& object_id,
@@ skipping 17 matching lines @@
 
   // Last modified time of the object.
   base::Time last_modified_time;
 };
 
 typedef std::vector<MTPDeviceObjectEntry> MTPDeviceObjectEntries;
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_WIN_MTP_DEVICE_OBJECT_ENTRY_H_