Moved RtcEventLog files from call/ to logging/ (new top level dir)

webrtc/logging/rtc_event_log/ringbuffer.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_CALL_RINGBUFFER_H_
-#define WEBRTC_CALL_RINGBUFFER_H_
+#ifndef WEBRTC_LOGGING_RTC_EVENT_LOG_RINGBUFFER_H_
+#define WEBRTC_LOGGING_RTC_EVENT_LOG_RINGBUFFER_H_
 
 #include <memory>
 #include <utility>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/constructormagic.h"
 
 namespace webrtc {
 
 // A RingBuffer works like a fixed size queue which starts discarding
@@ skipping 66 matching lines @@
   std::unique_ptr<T[]> data_;
   T* end_;
   T* front_;
   T* back_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RingBuffer);
 };
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_CALL_RINGBUFFER_H_
+#endif  // WEBRTC_LOGGING_RTC_EVENT_LOG_RINGBUFFER_H_