Update I420Buffer to new VideoFrameBuffer interface

webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.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 139 matching lines @@
     encode_complete_callback_.reset(new Vp8UnitTestEncodeCompleteCallback(
         &encoded_frame_, &codec_specific_info_, 0, nullptr));
     decode_complete_callback_.reset(
         new Vp8UnitTestDecodeCompleteCallback(&decoded_frame_, &decoded_qp_));
     encoder_->RegisterEncodeCompleteCallback(encode_complete_callback_.get());
     decoder_->RegisterDecodeCompleteCallback(decode_complete_callback_.get());
     // Using a QCIF image (aligned stride (u,v planes) > width).
     // Processing only one frame.
     source_file_ = fopen(test::ResourcePath("paris_qcif", "yuv").c_str(), "rb");
     ASSERT_TRUE(source_file_ != nullptr);
-    rtc::scoped_refptr<VideoFrameBuffer> compact_buffer(
+    rtc::scoped_refptr<I420BufferInterface> compact_buffer(
         test::ReadI420Buffer(kWidth, kHeight, source_file_));
     ASSERT_TRUE(compact_buffer);
     codec_settings_.width = kWidth;
     codec_settings_.height = kHeight;
     const int kFramerate = 30;
     codec_settings_.maxFramerate = kFramerate;
     // Setting aligned stride values.
     int stride_uv;
     int stride_y;
     Calc16ByteAlignedStride(codec_settings_.width, &stride_y, &stride_uv);
@@ skipping 256 matching lines @@
   // Temporal layer 1.
   input_frame_->set_timestamp(input_frame_->timestamp() +
                               kTimestampIncrementPerFrame);
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
             encoder_->Encode(*input_frame_, nullptr, nullptr));
   ExpectFrameWith((picture_id + 7) % (1 << 15), (tl0_pic_idx + 3) % (1 << 8),
                   1);
 }
 
 }  // namespace webrtc