Fix all -Wnon-virtual-dtor warnings.

webrtc/media/base/codec.h

 /*
  *  Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 55 matching lines @@
   std::string name;
   int clockrate;
   CodecParameterMap params;
   FeedbackParams feedback_params;
 
   // Creates a codec with the given parameters.
   Codec(int id, const std::string& name, int clockrate);
   // Creates an empty codec.
   Codec();
   Codec(const Codec& c);
-  ~Codec();
+  virtual ~Codec();
 
   // Indicates if this codec is compatible with the specified codec.
   bool Matches(const Codec& codec) const;
 
   // Find the parameter for |name| and write the value to |out|.
   bool GetParam(const std::string& name, std::string* out) const;
   bool GetParam(const std::string& name, int* out) const;
 
   void SetParam(const std::string& name, const std::string& value);
   void SetParam(const std::string& name, int value);
@@ skipping 26 matching lines @@
 
   // Creates a codec with the given parameters.
   AudioCodec(int id,
              const std::string& name,
              int clockrate,
              int bitrate,
              size_t channels);
   // Creates an empty codec.
   AudioCodec();
   AudioCodec(const AudioCodec& c);
-  ~AudioCodec() = default;
+  virtual ~AudioCodec() = default;
 
   // Indicates if this codec is compatible with the specified codec.
   bool Matches(const AudioCodec& codec) const;
 
   std::string ToString() const;
 
   webrtc::RtpCodecParameters ToCodecParameters() const override;
 
   AudioCodec& operator=(const AudioCodec& c);
 
@@ skipping 12 matching lines @@
   // Creates a codec with the given parameters.
   VideoCodec(int id,
              const std::string& name,
              int width,
              int height,
              int framerate);
   VideoCodec(int id, const std::string& name);
   // Creates an empty codec.
   VideoCodec();
   VideoCodec(const VideoCodec& c);
-  ~VideoCodec() = default;
+  virtual ~VideoCodec() = default;
 
   std::string ToString() const;
 
   VideoCodec& operator=(const VideoCodec& c);
 
   bool operator==(const VideoCodec& c) const;
 
   bool operator!=(const VideoCodec& c) const {
     return !(*this == c);
   }
@@ skipping 12 matching lines @@
   // Validates a VideoCodec's payload type, dimensions and bitrates etc. If they
   // don't make sense (such as max < min bitrate), and error is logged and
   // ValidateCodecFormat returns false.
   bool ValidateCodecFormat() const;
 };
 
 struct DataCodec : public Codec {
   DataCodec(int id, const std::string& name);
   DataCodec();
   DataCodec(const DataCodec& c);
+  virtual ~DataCodec() = default;
 
   DataCodec& operator=(const DataCodec& c);
 
   std::string ToString() const;
 };
 
 // Get the codec setting associated with |payload_type|. If there
 // is no codec associated with that payload type it returns false.
 template <class Codec>
 bool FindCodecById(const std::vector<Codec>& codecs,
                    int payload_type,
                    Codec* codec_out) {
   for (const auto& codec : codecs) {
     if (codec.id == payload_type) {
       *codec_out = codec;
       return true;
     }
   }
   return false;
 }
 
 bool CodecNamesEq(const std::string& name1, const std::string& name2);
 bool HasNack(const Codec& codec);
 bool HasRemb(const Codec& codec);
 bool HasTransportCc(const Codec& codec);
 
 }  // namespace cricket
 
 #endif  // WEBRTC_MEDIA_BASE_CODEC_H_