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

webrtc/common_video/include/i420_buffer_pool.h

 /*
  *  Copyright (c) 2015 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.
  */
 
 #ifndef WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_
 #define WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_
 
 #include <list>
 #include <limits>
 
 #include "webrtc/api/video/i420_buffer.h"
-#include "webrtc/rtc_base/race_checker.h"
+#include "webrtc/base/race_checker.h"
 
 namespace webrtc {
 
 // Simple buffer pool to avoid unnecessary allocations of I420Buffer objects.
 // The pool manages the memory of the I420Buffer returned from CreateBuffer.
 // When the I420Buffer is destructed, the memory is returned to the pool for use
 // by subsequent calls to CreateBuffer. If the resolution passed to CreateBuffer
 // changes, old buffers will be purged from the pool.
 // Note that CreateBuffer will crash if more than kMaxNumberOfFramesBeforeCrash
 // are created. This is to prevent memory leaks where frames are not returned.
@@ skipping 26 matching lines @@
   // initial allocation (as shown by FFmpeg's own buffer allocation code). It
   // has to do with "Use-of-uninitialized-value" on "Linux_msan_chrome".
   const bool zero_initialize_;
   // Max number of buffers this pool can have pending.
   const size_t max_number_of_buffers_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_