Revert of Replace FileWrapper with File (in audio_device)

webrtc/modules/audio_device/audio_device_buffer.h

Index: webrtc/modules/audio_device/audio_device_buffer.h
diff --git a/webrtc/modules/audio_device/audio_device_buffer.h b/webrtc/modules/audio_device/audio_device_buffer.h
index 7dc224931b4162230637aed0dd9b0e8ed920fbc3..5805db7743c7f7ccc43d4c84ee1604dfa019d33f 100644
--- a/webrtc/modules/audio_device/audio_device_buffer.h
+++ b/webrtc/modules/audio_device/audio_device_buffer.h
@@ -16,6 +16,7 @@
 #include "webrtc/base/task_queue.h"
 #include "webrtc/base/thread_checker.h"
 #include "webrtc/modules/audio_device/include/audio_device.h"
+#include "webrtc/system_wrappers/include/file_wrapper.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
@@ -32,7 +33,7 @@
   AudioDeviceBuffer();
   virtual ~AudioDeviceBuffer();
 
-  void SetId(uint32_t id) {}
+  void SetId(uint32_t id) {};
   int32_t RegisterAudioCallback(AudioTransport* audio_callback);
 
   int32_t InitPlayout();