Convert usage of ARRAY_SIZE to arraysize.

webrtc/sound/linuxsoundsystem.h

 /*
  *  Copyright 2004 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_SOUND_LINUXSOUNDSYSTEM_H_
 #define WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_
 
+#include "webrtc/base/arraysize.h"
 #include "webrtc/sound/automaticallychosensoundsystem.h"
 
 namespace rtc {
 
 extern const SoundSystemCreator kLinuxSoundSystemCreators[
 #ifdef HAVE_LIBPULSE
     2
 #else
     1
 #endif
     ];
 
 // The vast majority of Linux systems use ALSA for the device-level sound API,
 // but an increasing number are using PulseAudio for the application API and
 // only using ALSA internally in PulseAudio itself. But like everything on
 // Linux this is user-configurable, so we need to support both and choose the
 // right one at run-time.
 // PulseAudioSoundSystem is designed to only successfully initialize if
 // PulseAudio is installed and running, and if it is running then direct device
 // access using ALSA typically won't work, so if PulseAudioSoundSystem
 // initializes then we choose that. Otherwise we choose ALSA.
 typedef AutomaticallyChosenSoundSystem<
     kLinuxSoundSystemCreators,
-    ARRAY_SIZE(kLinuxSoundSystemCreators)> LinuxSoundSystem;
+    arraysize(kLinuxSoundSystemCreators)> LinuxSoundSystem;
 
 }  // namespace rtc
 
 #endif  // WEBRTC_SOUND_LINUXSOUNDSYSTEM_H_