Standardize usage of virtual/override/final in net/

net/filter/gzip_filter.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.
 
 // GZipFilter applies gzip and deflate content encoding/decoding to a data
 // stream. As specified by HTTP 1.1, with gzip encoding the content is
 // wrapped with a gzip header, and with deflate encoding the content is in
 // a raw, headerless DEFLATE stream.
 //
 // Internally GZipFilter uses zlib inflate to do decoding.
 //
 // GZipFilter is a subclass of Filter. See the latter's header file filter.h
 // for sample usage.
 
 #ifndef NET_FILTER_GZIP_FILTER_H_
 #define NET_FILTER_GZIP_FILTER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/filter/filter.h"
 
 typedef struct z_stream_s z_stream;
 
 namespace net {
 
 class GZipHeader;
 
 class GZipFilter : public Filter {
  public:
-  virtual ~GZipFilter();
+  ~GZipFilter() override;
 
   // Initializes filter decoding mode and internal control blocks.
   // Parameter filter_type specifies the type of filter, which corresponds to
   // either gzip or deflate decoding. The function returns true if success and
   // false otherwise.
   // The filter can only be initialized once.
   bool InitDecoding(Filter::FilterType filter_type);
 
   // Decodes the pre-filter data and writes the output into the dest_buffer
   // passed in.
   // The function returns FilterStatus. See filter.h for its description.
   //
   // Upon entry, *dest_len is the total size (in number of chars) of the
   // destination buffer. Upon exit, *dest_len is the actual number of chars
   // written into the destination buffer.
   //
   // This function will fail if there is no pre-filter data in the
   // stream_buffer_. On the other hand, *dest_len can be 0 upon successful
   // return. For example, the internal zlib may process some pre-filter data
   // but not produce output yet.
-  virtual FilterStatus ReadFilteredData(char* dest_buffer,
-                                        int* dest_len) override;
+  FilterStatus ReadFilteredData(char* dest_buffer, int* dest_len) override;
 
  private:
   enum DecodingStatus {
     DECODING_UNINITIALIZED,
     DECODING_IN_PROGRESS,
     DECODING_DONE,
     DECODING_ERROR
   };
 
   enum DecodingMode {
@@ skipping 79 matching lines @@
   // If this flag is set, then we will revert to being a pass through filter if
   // we don't get a valid gzip header.
   bool possible_sdch_pass_through_;
 
   DISALLOW_COPY_AND_ASSIGN(GZipFilter);
 };
 
 }  // namespace net
 
 #endif  // NET_FILTER_GZIP_FILTER_H__