Explicitly enable RED over RTX in rampup tests.

webrtc/call/rampup_tests.h

 /*
  *  Copyright (c) 2014 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 82 matching lines @@
   const int start_bitrate_bps_;
   bool start_bitrate_verified_;
   int expected_bitrate_bps_;
   int64_t test_start_ms_;
   int64_t ramp_up_finished_ms_;
 
   const std::string extension_type_;
   std::vector<uint32_t> video_ssrcs_;
   std::vector<uint32_t> video_rtx_ssrcs_;
   std::vector<uint32_t> audio_ssrcs_;
-  SsrcMap rtx_ssrc_map_;
 
   rtc::PlatformThread poller_thread_;
 };
 
 class RampUpDownUpTester : public RampUpTester {
  public:
   RampUpDownUpTester(size_t num_video_streams,
                      size_t num_audio_streams,
                      unsigned int start_bitrate_bps,
                      const std::string& extension_type,
@@ skipping 16 matching lines @@
   std::string GetModifierString() const;
   void EvolveTestState(int bitrate_bps, bool suspended);
 
   TestStates test_state_;
   int64_t state_start_ms_;
   int64_t interval_start_ms_;
   int sent_bytes_;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_CALL_RAMPUP_TESTS_H_