content: Change auto to not deduce raw pointers.

content/renderer/media/webrtc_audio_device_impl.cc

Index: content/renderer/media/webrtc_audio_device_impl.cc
diff --git a/content/renderer/media/webrtc_audio_device_impl.cc b/content/renderer/media/webrtc_audio_device_impl.cc
index 2cb2eacbb32a05ab72d41ad2701915a1272ae3f7..3a27a7d496eac901e0fd63d7cf5c0fb40fc3fa63 100644
--- a/content/renderer/media/webrtc_audio_device_impl.cc
+++ b/content/renderer/media/webrtc_audio_device_impl.cc
@@ -68,7 +68,7 @@ void WebRtcAudioDeviceImpl::RenderData(media::AudioBus* audio_bus,
 #if DCHECK_IS_ON()
     DCHECK(renderer_->CurrentThreadIsRenderingThread());
     if (!audio_renderer_thread_checker_.CalledOnValidThread()) {
-      for (const auto& sink : playout_sinks_)
+      for (auto* sink : playout_sinks_)
         sink->OnRenderThreadChanged();
     }
 #endif
@@ -134,7 +134,7 @@ void WebRtcAudioDeviceImpl::AudioRendererThreadStopped() {
   // Notify the playout sink of the change.
   // Not holding |lock_| because the caller must guarantee that the audio
   // renderer thread is dead, so no race is possible with |playout_sinks_|
-  for (const auto& sink : playout_sinks_)
+  for (auto* sink : playout_sinks_)
     sink->OnPlayoutDataSourceChanged();
 }