Relanding: Removing #defines previously used for building without BoringSSL/OpenSSL.

webrtc/pc/test/peerconnectiontestwrapper.cc

Index: webrtc/pc/test/peerconnectiontestwrapper.cc
diff --git a/webrtc/pc/test/peerconnectiontestwrapper.cc b/webrtc/pc/test/peerconnectiontestwrapper.cc
index 6404e2b3fcf385306141aaa7ffd73ace0f52464d..c4336996528ae2fcbb3d45ea931d3774e1b061ca 100644
--- a/webrtc/pc/test/peerconnectiontestwrapper.cc
+++ b/webrtc/pc/test/peerconnectiontestwrapper.cc
@@ -76,8 +76,7 @@ bool PeerConnectionTestWrapper::CreatePc(
   }
 
   std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator(
-      rtc::SSLStreamAdapter::HaveDtlsSrtp() ? new FakeRTCCertificateGenerator()
-                                            : nullptr);
+      new FakeRTCCertificateGenerator());
   peer_connection_ = peer_connection_factory_->CreatePeerConnection(
       config, constraints, std::move(port_allocator), std::move(cert_generator),
       this);