Replace scoped_ptr with unique_ptr in webrtc/voice_engine/

webrtc/voice_engine/channel_proxy.cc

Index: webrtc/voice_engine/channel_proxy.cc
diff --git a/webrtc/voice_engine/channel_proxy.cc b/webrtc/voice_engine/channel_proxy.cc
index 1e2281aef4af21c2ddf5999f86fbb44bee3daf7a..3beaf9b2942c784acab4942fa5d7d7cb7e461b38 100644
--- a/webrtc/voice_engine/channel_proxy.cc
+++ b/webrtc/voice_engine/channel_proxy.cc
@@ -155,7 +155,7 @@ bool ChannelProxy::SendTelephoneEventOutband(uint8_t event,
       channel()->SendTelephoneEventOutband(event, duration_ms, 10, false) == 0;
 }
 
-void ChannelProxy::SetSink(rtc::scoped_ptr<AudioSinkInterface> sink) {
+void ChannelProxy::SetSink(std::unique_ptr<AudioSinkInterface> sink) {
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   channel()->SetSink(std::move(sink));
 }