Misc cleanups in Drive code.

chrome/browser/chromeos/drive/drive_file_system_util.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_CHROMEOS_DRIVE_DRIVE_FILE_SYSTEM_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_SYSTEM_UTIL_H_
 
 #include <string>
-#include <utility>
-#include <vector>
 
 #include "base/callback_forward.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
-#include "chrome/browser/chromeos/drive/drive_resource_metadata.h"
+#include "chrome/browser/chromeos/drive/drive_file_error.h"
 #include "chrome/browser/google_apis/gdata_errorcode.h"
 #include "googleurl/src/gurl.h"
 
 class Profile;
 
 namespace base {
 class FilePath;
 }
 
 namespace drive {
@@ skipping 109 matching lines @@
 void ConvertProtoToPlatformFileInfo(const PlatformFileInfoProto& proto,
                                     base::PlatformFileInfo* file_info);
 
 // Converts the platform file info to the proto representation.
 void ConvertPlatformFileInfoToProto(const base::PlatformFileInfo& file_info,
                                     PlatformFileInfoProto* proto);
 }  // namespace util
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_DRIVE_FILE_SYSTEM_UTIL_H_