content: Change auto to not deduce raw pointers.

content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc

Index: content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc
diff --git a/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc b/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc
index 354615d21cf357a3caf952d13f22486064d6920c..bbffbc6eb553eefbc63d6b23dd8f4afbefd88a37 100644
--- a/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc
+++ b/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc
@@ -203,7 +203,7 @@ void MockWebRtcAudioTrack::UnregisterObserver(ObserverInterface* observer) {
 void MockWebRtcAudioTrack::SetEnded() {
   DCHECK_EQ(webrtc::MediaStreamTrackInterface::kLive, state_);
   state_ = webrtc::MediaStreamTrackInterface::kEnded;
-  for (auto& o : observers_)
+  for (auto* o : observers_)
     o->OnChanged();
 }
 
@@ -270,7 +270,7 @@ void MockWebRtcVideoTrack::UnregisterObserver(ObserverInterface* observer) {
 void MockWebRtcVideoTrack::SetEnded() {
   DCHECK_EQ(webrtc::MediaStreamTrackInterface::kLive, state_);
   state_ = webrtc::MediaStreamTrackInterface::kEnded;
-  for (auto& o : observers_)
+  for (auto* o : observers_)
     o->OnChanged();
 }