Add cropping to VIEEncoder to match simulcast streams resolution

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 33 matching lines @@
       int target_bitrate_bps;
       int max_bitrate_bps;
       bool suspend_below_min_bitrate;
       std::string codec;
       int num_temporal_layers;
       int selected_tl;
       int min_transmit_bps;
       bool ulpfec;
       bool flexfec;
       std::string encoded_frame_base_path;
-      std::string clip_name;
+      std::string clip_name;  // "Generator" to generate frames instead.
       size_t capture_device_index;
     } video;
     struct Audio {
       bool enabled;
       bool sync_video;
       bool dtx;
     } audio;
     struct Screenshare {
       bool enabled;
       int32_t slide_change_interval;
@@ skipping 10 matching lines @@
     } analyzer;
     FakeNetworkPipe::Config pipe;
     bool logs;
     struct SS {                          // Spatial scalability.
       std::vector<VideoStream> streams;  // If empty, one stream is assumed.
       size_t selected_stream;
       int num_spatial_layers;
       int selected_sl;
       // If empty, bitrates are generated in VP9Impl automatically.
       std::vector<SpatialLayer> spatial_layers;
+      // If set, default parameters will be used instead of |streams|.
+      bool infer_streams;
     } ss;
     int num_thumbnails;
   };
 
   VideoQualityTest();
   void RunWithAnalyzer(const Params& params);
   void RunWithRenderers(const Params& params);
 
   static void FillScalabilitySettings(
       Params* params,
@@ skipping 56 matching lines @@
   int send_logs_;
 
   VideoSendStream::DegradationPreference degradation_preference_ =
       VideoSendStream::DegradationPreference::kMaintainFramerate;
   Params params_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_QUALITY_TEST_H_