Merge to M57: Only set certificate on DTLS transport if fingerprint is found in SDP.

webrtc/p2p/base/faketransportcontroller.h

Index: webrtc/p2p/base/faketransportcontroller.h
diff --git a/webrtc/p2p/base/faketransportcontroller.h b/webrtc/p2p/base/faketransportcontroller.h
index a73d464ece548bc05d3b0b1fcaf0cac7c24dfc0e..db12ca5f055f637ef45244cd218a5f01777fbb47 100644
--- a/webrtc/p2p/base/faketransportcontroller.h
+++ b/webrtc/p2p/base/faketransportcontroller.h
@@ -625,16 +625,28 @@ class FakeTransportController : public TransportController {
   // exchange of ICE candidates.
   void Connect(FakeTransportController* dest) {
     for (const std::string& transport_name : transport_names_for_testing()) {
+      std::unique_ptr<rtc::SSLFingerprint> local_fingerprint;
+      std::unique_ptr<rtc::SSLFingerprint> remote_fingerprint;
+      if (certificate_for_testing()) {
+        local_fingerprint.reset(rtc::SSLFingerprint::CreateFromCertificate(
+            certificate_for_testing()));
+      }
+      if (dest->certificate_for_testing()) {
+        remote_fingerprint.reset(rtc::SSLFingerprint::CreateFromCertificate(
+            dest->certificate_for_testing()));
+      }
       TransportDescription local_desc(
           std::vector<std::string>(),
           rtc::CreateRandomString(cricket::ICE_UFRAG_LENGTH),
           rtc::CreateRandomString(cricket::ICE_PWD_LENGTH),
-          cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE, nullptr);
+          cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE,
+          local_fingerprint.get());
       TransportDescription remote_desc(
           std::vector<std::string>(),
           rtc::CreateRandomString(cricket::ICE_UFRAG_LENGTH),
           rtc::CreateRandomString(cricket::ICE_PWD_LENGTH),
-          cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE, nullptr);
+          cricket::ICEMODE_FULL, cricket::CONNECTIONROLE_NONE,
+          remote_fingerprint.get());
       std::string err;
       SetLocalTransportDescription(transport_name, local_desc,
                                    cricket::CA_OFFER, &err);