Standardize usage of virtual/override/final in storage/

storage/browser/fileapi/local_file_util.cc

 // 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.
 
 #include "storage/browser/fileapi/local_file_util.h"
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/files/file_util_proxy.h"
 #include "storage/browser/fileapi/async_file_util_adapter.h"
@@ skipping 14 matching lines @@
 class LocalFileEnumerator : public FileSystemFileUtil::AbstractFileEnumerator {
  public:
   LocalFileEnumerator(const base::FilePath& platform_root_path,
                       const base::FilePath& virtual_root_path,
                       int file_type)
       : file_enum_(platform_root_path, false /* recursive */, file_type),
         platform_root_path_(platform_root_path),
         virtual_root_path_(virtual_root_path) {
   }
 
-  virtual ~LocalFileEnumerator() {}
+  ~LocalFileEnumerator() override {}
 
-  virtual base::FilePath Next() override;
-  virtual int64 Size() override;
-  virtual base::Time LastModifiedTime() override;
-  virtual bool IsDirectory() override;
+  base::FilePath Next() override;
+  int64 Size() override;
+  base::Time LastModifiedTime() override;
+  bool IsDirectory() override;
 
  private:
   base::FileEnumerator file_enum_;
   base::FileEnumerator::FileInfo file_util_info_;
   base::FilePath platform_root_path_;
   base::FilePath virtual_root_path_;
 };
 
 base::FilePath LocalFileEnumerator::Next() {
   base::FilePath next = file_enum_.Next();
@@ skipping 204 matching lines @@
     base::FilePath* platform_path) {
   DCHECK(file_info);
   // We're just returning the local file information.
   *error = GetFileInfo(context, url, file_info, platform_path);
   if (*error == base::File::FILE_OK && file_info->is_directory)
     *error = base::File::FILE_ERROR_NOT_A_FILE;
   return storage::ScopedFile();
 }
 
 }  // namespace storage