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

webrtc/media/base/videosourcebase.cc

 /*
  *  Copyright (c) 2016 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/media/base/videosourcebase.h"
 
-#include "webrtc/base/checks.h"
+#include "webrtc/rtc_base/checks.h"
 
 namespace rtc {
 
 VideoSourceBase::VideoSourceBase() {
   thread_checker_.DetachFromThread();
 }
 
 void VideoSourceBase::AddOrUpdateSink(
     VideoSinkInterface<webrtc::VideoFrame>* sink,
     const VideoSinkWants& wants) {
@@ skipping 25 matching lines @@
   auto sink_pair_it = std::find_if(
       sinks_.begin(), sinks_.end(),
       [sink](const SinkPair& sink_pair) { return sink_pair.sink == sink; });
   if (sink_pair_it != sinks_.end()) {
     return &*sink_pair_it;
   }
   return nullptr;
 }
 
 }  // namespace rtc