Add command-line param to screenshare_loopback to specify a list of slides

webrtc/video/video_quality_test.h

 /*
  *  Copyright (c) 2015 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_VIDEO_VIDEO_QUALITY_TEST_H_
@@ skipping 44 matching lines @@
     } video;
     struct Audio {
       bool enabled;
       bool sync_video;
       bool dtx;
     } audio;
     struct Screenshare {
       bool enabled;
       int32_t slide_change_interval;
       int32_t scroll_duration;
+      std::vector<std::string> slides;
     } screenshare;
     struct Analyzer {
       std::string test_label;
       double avg_psnr_threshold;  // (*)
       double avg_ssim_threshold;  // (*)
       int test_durations_secs;
       std::string graph_data_output_filename;
       std::string graph_title;
     } analyzer;
     FakeNetworkPipe::Config pipe;
@@ skipping 74 matching lines @@
   int send_logs_;
 
   VideoSendStream::DegradationPreference degradation_preference_ =
       VideoSendStream::DegradationPreference::kMaintainFramerate;
   Params params_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_QUALITY_TEST_H_