Remove base::SupportsWeakPtr from FrameReceiver

media/cast/receiver/frame_receiver.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_RECEIVER_FRAME_RECEIVER_H_
 #define MEDIA_CAST_RECEIVER_FRAME_RECEIVER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 32 matching lines @@
 // the sender, then receive and re-order packets on the receiver, then decode
 // frame) can vary in duration and is typically very hard to predict.
 //
 // Each request for a frame includes a callback which FrameReceiver guarantees
 // will be called at some point in the future unless the FrameReceiver is
 // destroyed.  Clients should generally limit the number of outstanding requests
 // (perhaps to just one or two).
 //
 // This class is not thread safe.  Should only be called from the Main cast
 // thread.
-class FrameReceiver : public RtpPayloadFeedback,
-                      public base::SupportsWeakPtr<FrameReceiver> {
+class FrameReceiver : public RtpPayloadFeedback {
  public:
   FrameReceiver(const scoped_refptr<CastEnvironment>& cast_environment,
                 const FrameReceiverConfig& config,
                 EventMediaType event_media_type,
                 CastTransport* const transport);
 
   ~FrameReceiver() final;
 
   // Request an encoded frame.
   //
   // The given |callback| is guaranteed to be run at some point in the future,
   // except for those requests still enqueued at destruction time.
   void RequestEncodedFrame(const ReceiveEncodedFrameCallback& callback);
 
   // Called to deliver another packet, possibly a duplicate, and possibly
   // out-of-order.  Returns true if the parsing of the packet succeeded.
   bool ProcessPacket(std::unique_ptr<Packet> packet);
 
+  base::WeakPtr<FrameReceiver> AsWeakPtr();
+
  protected:
   friend class FrameReceiverTest;  // Invokes ProcessParsedPacket().
 
   void ProcessParsedPacket(const RtpCastHeader& rtp_header,
                            const uint8_t* payload_data,
                            size_t payload_size);
 
   // RtpPayloadFeedback implementation.
   void CastFeedback(const RtcpCastMessage& cast_message) final;
 
@@ skipping 121 matching lines @@
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<FrameReceiver> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameReceiver);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RECEIVER_FRAME_RECEIVER_H_