Add ability to instantiate VideoEncoderSoftwareFallback in VP tests.

webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc

Index: webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc
diff --git a/webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc b/webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc
index b715d2e074c8aabf7af0d5d5209ca39bc5675aa5..ef6dbde545d79786c974973fe03eb8c53e2934c7 100644
--- a/webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc
+++ b/webrtc/modules/video_coding/codecs/test/plot_videoprocessor_integrationtest.cc
@@ -63,7 +63,8 @@ class PlotVideoProcessorIntegrationTest
         TempFilename(OutputPath(), "plot_videoprocessor_integrationtest");
     config_.use_single_core = kUseSingleCore;
     config_.verbose = true;
-    config_.hw_codec = hw_codec_;
+    config_.hw_encoder = hw_codec_;
+    config_.hw_decoder = hw_codec_;
     SetCodecSettings(&config_, codec_type_, kNumTemporalLayers,
                      kErrorConcealmentOn, kDenoisingOn, kFrameDropperOn,
                      kSpatialResizeOn, kResilienceOn, width, height);