Remove base::SupportsWeakPtr from {Audio,Video}Sender

media/cast/sender/audio_sender.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 MEDIA_CAST_SENDER_AUDIO_SENDER_H_
 #define MEDIA_CAST_SENDER_AUDIO_SENDER_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 12 matching lines @@
 namespace cast {
 
 class AudioEncoder;
 
 // Not thread safe. Only called from the main cast thread.
 // This class owns all objects related to sending audio, objects that create RTP
 // packets, congestion control, audio encoder, parsing and sending of
 // RTCP packets.
 // Additionally it posts a bunch of delayed tasks to the main thread for various
 // timeouts.
-class AudioSender : public FrameSender,
-                    public base::NonThreadSafe,
-                    public base::SupportsWeakPtr<AudioSender> {
+class AudioSender : public FrameSender, public base::NonThreadSafe {
  public:
   AudioSender(scoped_refptr<CastEnvironment> cast_environment,
               const FrameSenderConfig& audio_config,
               const StatusChangeCallback& status_change_cb,
               CastTransport* const transport_sender);
 
   ~AudioSender() final;
 
   // Note: It is not guaranteed that |audio_frame| will actually be encoded and
   // sent, if AudioSender detects too many frames in flight.  Therefore, clients
   // should be careful about the rate at which this method is called.
   void InsertAudio(std::unique_ptr<AudioBus> audio_bus,
                    const base::TimeTicks& recorded_time);
 
+  base::WeakPtr<AudioSender> AsWeakPtr();
+
  protected:
   int GetNumberOfFramesInEncoder() const final;
   base::TimeDelta GetInFlightMediaDuration() const final;
 
  private:
   // Called by the |audio_encoder_| with the next EncodedFrame to send.
   void OnEncodedAudioFrame(int encoder_bitrate,
                            std::unique_ptr<SenderEncodedFrame> encoded_frame,
                            int samples_skipped);
 
   // Encodes AudioBuses into EncodedFrames.
   std::unique_ptr<AudioEncoder> audio_encoder_;
 
   // The number of audio samples enqueued in |audio_encoder_|.
   int samples_in_encoder_;
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<AudioSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioSender);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_SENDER_AUDIO_SENDER_H_