Revert of Add optional visualization file writers to VideoProcessor tests.

webrtc/test/testsupport/y4m_frame_writer.cc

Index: webrtc/test/testsupport/y4m_frame_writer.cc
diff --git a/webrtc/test/testsupport/y4m_frame_writer.cc b/webrtc/test/testsupport/y4m_frame_writer.cc
deleted file mode 100644
index 28fb4b06dbe4a82371a5c1c94735fea14d8be061..0000000000000000000000000000000000000000
--- a/webrtc/test/testsupport/y4m_frame_writer.cc
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- *  Copyright (c) 2017 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.
- */
-
-#include "webrtc/base/checks.h"
-#include "webrtc/test/testsupport/frame_writer.h"
-
-namespace webrtc {
-namespace test {
-
-Y4mFrameWriterImpl::Y4mFrameWriterImpl(std::string output_filename,
-                                       int width,
-                                       int height,
-                                       int frame_rate)
-    : YuvFrameWriterImpl(output_filename, width, height),
-      frame_rate_(frame_rate) {}
-
-Y4mFrameWriterImpl::~Y4mFrameWriterImpl() = default;
-
-bool Y4mFrameWriterImpl::Init() {
-  if (!YuvFrameWriterImpl::Init()) {
-    return false;
-  }
-  int bytes_written = fprintf(output_file_, "YUV4MPEG2 W%d H%d F%d:1 C420\n",
-                              width_, height_, frame_rate_);
-  if (bytes_written < 0) {
-    fprintf(stderr, "Failed to write Y4M file header to file %s\n",
-            output_filename_.c_str());
-    return false;
-  }
-  return true;
-}
-
-bool Y4mFrameWriterImpl::WriteFrame(uint8_t* frame_buffer) {
-  if (output_file_ == nullptr) {
-    fprintf(stderr,
-            "Y4mFrameWriterImpl is not initialized (output file is NULL)\n");
-    return false;
-  }
-  int bytes_written = fprintf(output_file_, "FRAME\n");
-  if (bytes_written < 0) {
-    fprintf(stderr, "Failed to write Y4M frame header to file %s\n",
-            output_filename_.c_str());
-    return false;
-  }
-  return YuvFrameWriterImpl::WriteFrame(frame_buffer);
-}
-
-}  // namespace test
-}  // namespace webrtc