Update {virtual,override,final} to follow C++11 style.

components/cronet/android/wrapped_channel_upload_element_reader.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 COMPONENTS_CRONET_ANDROID_WRAPPED_CHANNEL_UPLOAD_ELEMENT_READER_H_
 #define COMPONENTS_CRONET_ANDROID_WRAPPED_CHANNEL_UPLOAD_ELEMENT_READER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "components/cronet/android/url_request_adapter.h"
 #include "net/base/completion_callback.h"
 #include "net/base/upload_element_reader.h"
 
 namespace net {
 class IOBuffer;
 }  // namespace net
 
 namespace cronet {
 
 // An UploadElementReader implementation for
 // java.nio.channels.ReadableByteChannel.
 // |channel_| should outlive this class because this class does not take the
 // ownership of the data.
 class WrappedChannelElementReader : public net::UploadElementReader {
  public:
   WrappedChannelElementReader(
       scoped_refptr<URLRequestAdapter::URLRequestAdapterDelegate> delegate,
       uint64 length);
-  virtual ~WrappedChannelElementReader();
+  ~WrappedChannelElementReader() override;
 
   // UploadElementReader overrides:
-  virtual int Init(const net::CompletionCallback& callback) override;
-  virtual uint64 GetContentLength() const override;
-  virtual uint64 BytesRemaining() const override;
-  virtual bool IsInMemory() const override;
-  virtual int Read(net::IOBuffer* buf,
-                   int buf_length,
-                   const net::CompletionCallback& callback) override;
+  int Init(const net::CompletionCallback& callback) override;
+  uint64 GetContentLength() const override;
+  uint64 BytesRemaining() const override;
+  bool IsInMemory() const override;
+  int Read(net::IOBuffer* buf,
+           int buf_length,
+           const net::CompletionCallback& callback) override;
 
  private:
   const uint64 length_;
   uint64 offset_;
   scoped_refptr<URLRequestAdapter::URLRequestAdapterDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(WrappedChannelElementReader);
 };
 
 }  // namespace cronet
 
 #endif  // COMPONENTS_CRONET_ANDROID_WRAPPED_CHANNEL_UPLOAD_ELEMENT_READER_H_