Update includes for webrtc/{base => rtc_base} rename (2/3)

webrtc/test/testsupport/y4m_frame_writer.cc

 /*
  *  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/rtc_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),
@@ skipping 25 matching lines @@
   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