Remove the deprecated PeerConnection that uses the ROAP protocol.

content/renderer/media/mock_media_stream_dependency_factory.cc

Index: content/renderer/media/mock_media_stream_dependency_factory.cc
diff --git a/content/renderer/media/mock_media_stream_dependency_factory.cc b/content/renderer/media/mock_media_stream_dependency_factory.cc
index b43e6ea8ff36878adba8d245fdf2fd6d29336159..06e4d1a7218a9530f12de03eb686491f4373c2e1 100644
--- a/content/renderer/media/mock_media_stream_dependency_factory.cc
+++ b/content/renderer/media/mock_media_stream_dependency_factory.cc
@@ -280,14 +280,6 @@ MockMediaStreamDependencyFactory::CreatePeerConnection(
   return new talk_base::RefCountedObject<webrtc::MockPeerConnectionImpl>(this);
 }
 
-talk_base::scoped_refptr<webrtc::PeerConnectionInterface>
-MockMediaStreamDependencyFactory::CreateRoapPeerConnection(
-    const std::string& config,
-    webrtc::PeerConnectionObserver* observer) {
-  DCHECK(mock_pc_factory_created_);
-  return new talk_base::RefCountedObject<webrtc::MockPeerConnectionImpl>(this);
-}
-
 talk_base::scoped_refptr<webrtc::LocalMediaStreamInterface>
 MockMediaStreamDependencyFactory::CreateLocalMediaStream(
     const std::string& label) {