Replace RefCountImpl with rtc::RefCountedObject.

webrtc/voice_engine/shared_data.cc

Index: webrtc/voice_engine/shared_data.cc
diff --git a/webrtc/voice_engine/shared_data.cc b/webrtc/voice_engine/shared_data.cc
index b21578c927bdef21205f356ec0adc9fc6832c5d9..997f51b43961f9f5d47945c82ac0f354a22b9c63 100644
--- a/webrtc/voice_engine/shared_data.cc
+++ b/webrtc/voice_engine/shared_data.cc
@@ -54,14 +54,9 @@ SharedData::~SharedData()
     Trace::ReturnTrace();
 }
 
-void SharedData::set_audio_device(AudioDeviceModule* audio_device)
-{
-    // AddRef first in case the pointers are equal.
-    if (audio_device)
-      audio_device->AddRef();
-    if (_audioDevicePtr)
-      _audioDevicePtr->Release();
-    _audioDevicePtr = audio_device;
+void SharedData::set_audio_device(
+    const rtc::scoped_refptr<AudioDeviceModule>& audio_device) {
+  _audioDevicePtr = audio_device;
 }
 
 void SharedData::set_audio_processing(AudioProcessing* audioproc) {