Add ability to instantiate VideoEncoderSoftwareFallback in VP tests.

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

 /*
  *  Copyright (c) 2012 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 26 matching lines @@
  protected:
   VideoProcessorIntegrationTestLibvpx() {
     config_.filename = "foreman_cif";
     config_.input_filename = ResourcePath(config_.filename, "yuv");
     config_.output_filename =
         TempFilename(OutputPath(), "videoprocessor_integrationtest_libvpx");
     config_.networking_config.packet_loss_probability = 0.0;
     // Only allow encoder/decoder to use single core, for predictability.
     config_.use_single_core = true;
     config_.verbose = false;
-    config_.hw_codec = false;
+    config_.hw_encoder = false;
+    config_.hw_decoder = false;
   }
 };
 
 // Fails on iOS. See webrtc:4755.
 #if !defined(WEBRTC_IOS)
 
 #if !defined(RTC_DISABLE_VP9)
 // VP9: Run with no packet loss and fixed bitrate. Quality should be very high.
 // One key frame (first frame only) in sequence.
 TEST_F(VideoProcessorIntegrationTestLibvpx, Process0PercentPacketLossVP9) {
@@ skipping 311 matching lines @@
   AddRateControlThresholds(0, 0, 30, 15, 10, 0, 0, &rc_thresholds);
 
   QualityThresholds quality_thresholds(32.5, 30.0, 0.85, 0.80);
 
   ProcessFramesAndMaybeVerify(rate_profile, &rc_thresholds, &quality_thresholds,
                               kNoVisualizationParams);
 }
 
 }  // namespace test
 }  // namespace webrtc