Fix forward declaration typo in UlpfecGenerator.

webrtc/modules/rtp_rtcp/source/ulpfec_generator.h

 /*
  *  Copyright (c) 2012 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.
  */
 
 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_ULPFEC_GENERATOR_H_
 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_ULPFEC_GENERATOR_H_
 
 #include <list>
 #include <memory>
 #include <vector>
 
 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h"
 
 namespace webrtc {
 
-class FlexfecSenderImpl;
+class FlexfecSender;
 
 class RedPacket {
  public:
   explicit RedPacket(size_t length);
 
   void CreateHeader(const uint8_t* rtp_header,
                     size_t header_length,
                     int red_payload_type,
                     int payload_type);
   void SetSeqNum(int seq_num);
@@ skipping 73 matching lines @@
   std::list<ForwardErrorCorrection::Packet*> generated_fec_packets_;
   int num_protected_frames_;
   int min_num_media_packets_;
   FecProtectionParams params_;
   FecProtectionParams new_params_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_ULPFEC_GENERATOR_H_