Add ability to instantiate VideoEncoderSoftwareFallback in VP tests.

webrtc/modules/video_coding/codecs/test/videoprocessor.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 76 matching lines @@
   } else if (codec_settings.codecType == kVideoCodecH264) {
     printf("  Frame dropping    : %d\n", codec_settings.H264().frameDroppingOn);
     printf("  Key frame interval: %d\n",
            codec_settings.H264().keyFrameInterval);
     printf("  Profile           : %d\n", codec_settings.H264().profile);
   }
 }
 
 void VerifyQpParser(const EncodedImage& encoded_frame,
                     const TestConfig& config) {
-  if (config.hw_codec)
+  if (config.hw_encoder)
     return;
 
   int qp;
   if (config.codec_settings.codecType == kVideoCodecVP8) {
     ASSERT_TRUE(vp8::GetQp(encoded_frame._buffer, encoded_frame._length, &qp));
   } else if (config.codec_settings.codecType == kVideoCodecVP9) {
     ASSERT_TRUE(vp9::GetQp(encoded_frame._buffer, encoded_frame._length, &qp));
   } else {
     return;
   }
@@ skipping 369 matching lines @@
   if (decoded_frame_writer_) {
     RTC_DCHECK_EQ(extracted_length, decoded_frame_writer_->FrameLength());
     RTC_CHECK(decoded_frame_writer_->WriteFrame(extracted_buffer.data()));
   }
 
   last_decoded_frame_buffer_ = std::move(extracted_buffer);
 }
 
 }  // namespace test
 }  // namespace webrtc