Standardize usage of virtual/override/final in storage/

storage/browser/fileapi/sandbox_file_stream_writer.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 STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
 #define STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 12 matching lines @@
 class FileSystemQuotaUtil;
 class FileStreamWriter;
 
 class STORAGE_EXPORT_PRIVATE SandboxFileStreamWriter
     : public NON_EXPORTED_BASE(FileStreamWriter) {
  public:
   SandboxFileStreamWriter(FileSystemContext* file_system_context,
                           const FileSystemURL& url,
                           int64 initial_offset,
                           const UpdateObserverList& observers);
-  virtual ~SandboxFileStreamWriter();
+  ~SandboxFileStreamWriter() override;
 
   // FileStreamWriter overrides.
-  virtual int Write(net::IOBuffer* buf, int buf_len,
-                    const net::CompletionCallback& callback) override;
-  virtual int Cancel(const net::CompletionCallback& callback) override;
-  virtual int Flush(const net::CompletionCallback& callback) override;
+  int Write(net::IOBuffer* buf,
+            int buf_len,
+            const net::CompletionCallback& callback) override;
+  int Cancel(const net::CompletionCallback& callback) override;
+  int Flush(const net::CompletionCallback& callback) override;
 
   // Used only by tests.
   void set_default_quota(int64 quota) {
     default_quota_ = quota;
   }
 
  private:
   // Performs quota calculation and calls local_file_writer_->Write().
   int WriteInternal(net::IOBuffer* buf, int buf_len,
                     const net::CompletionCallback& callback);
@@ skipping 37 matching lines @@
   int64 default_quota_;
 
   base::WeakPtrFactory<SandboxFileStreamWriter> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SandboxFileStreamWriter);
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_BROWSER_FILEAPI_SANDBOX_FILE_STREAM_WRITER_H_