Standardize usage of virtual/override/final in content/browser/

content/browser/loader/stream_writer.h

 // Copyright 2014 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 CONTENT_BROWSER_LOADER_STREAM_WRITER_H_
 #define CONTENT_BROWSER_LOADER_STREAM_WRITER_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "content/browser/streams/stream_write_observer.h"
@@ skipping 11 matching lines @@
 class StreamRegistry;
 
 // StreamWriter is a helper class for ResourceHandlers which route their output
 // into a Stream. It manages an internal buffer and handles back-pressure from
 // the Stream's reader.
 class StreamWriter : public StreamWriteObserver {
  public:
   // Creates a new StreamWriter without an initialized Stream or controller. The
   // controller must be set before the writer is used.
   StreamWriter();
-  virtual ~StreamWriter();
+  ~StreamWriter() override;
 
   Stream* stream() { return stream_.get(); }
 
   void set_controller(ResourceController* controller) {
     controller_ = controller;
   }
 
   // Initializes the writer with a new Stream in |registry|. |origin| will be
   // used to construct the URL for the Stream. See WebCore::BlobURL and and
   // WebCore::SecurityOrigin in Blink to understand how origin check is done on
@@ skipping 18 matching lines @@
   // Resume is called on |controller_|.
   //
   // InitializeStream must have been called before calling OnReadCompleted.
   void OnReadCompleted(int bytes_read, bool* defer);
 
   // Called when there is no more data to read to the stream.
   void Finalize();
 
  private:
   // StreamWriteObserver implementation.
-  virtual void OnSpaceAvailable(Stream* stream) override;
-  virtual void OnClose(Stream* stream) override;
+  void OnSpaceAvailable(Stream* stream) override;
+  void OnClose(Stream* stream) override;
 
   ResourceController* controller_;
   scoped_refptr<Stream> stream_;
   scoped_refptr<net::IOBuffer> read_buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(StreamWriter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_STREAM_WRITER_H_