system_wrappers: Fix include header guards.

webrtc/system_wrappers/include/tick_util.h

 /*
  *  Copyright (c) 2012 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.
  */
 
 // System independant wrapper for polling elapsed time in ms and us.
 // The implementation works in the tick domain which can be mapped over to the
 // time domain.
-#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TICK_UTIL_H_
-#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TICK_UTIL_H_
+#ifndef WEBRTC_SYSTEM_WRAPPERS_INCLUDE_TICK_UTIL_H_
+#define WEBRTC_SYSTEM_WRAPPERS_INCLUDE_TICK_UTIL_H_
 
 #if _WIN32
 // Note: The Windows header must always be included before mmsystem.h
 #include <windows.h>
 #include <mmsystem.h>
 #elif WEBRTC_LINUX
 #include <time.h>
 #elif WEBRTC_MAC
 #include <mach/mach_time.h>
 #include <string.h>
@@ skipping 261 matching lines @@
   return *this;
 }
 
 inline TickInterval& TickInterval::operator-=(const TickInterval& rhs) {
   interval_ -= rhs.interval_;
   return *this;
 }
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TICK_UTIL_H_
+#endif  // WEBRTC_SYSTEM_WRAPPERS_INCLUDE_TICK_UTIL_H_