Fix test bug introduced in r11101.

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 21 matching lines @@
 class RampUpTester : public test::EndToEndTest {
  public:
   RampUpTester(size_t num_video_streams,
                size_t num_audio_streams,
                unsigned int start_bitrate_bps,
                const std::string& extension_type,
                bool rtx,
                bool red);
   ~RampUpTester() override;
 
+  size_t GetNumVideoStreams() const override;
+
   void PerformTest() override;
 
  protected:
   virtual bool PollStats();
 
   void AccumulateStats(const VideoSendStream::StreamStats& stream,
                        size_t* total_packets_sent,
                        size_t* total_sent,
                        size_t* padding_sent,
                        size_t* media_sent) const;
@@ skipping 69 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_