Revert of Replacing DtlsIdentityStoreInterface with RTCCertificateGeneratorInterface.

webrtc/api/webrtcsession.cc

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 494 matching lines @@
     SignalDataChannelDestroyed();
     channel_manager_->DestroyDataChannel(data_channel_.release());
   }
   SignalDestroyed();
 
   LOG(LS_INFO) << "Session: " << id() << " is destroyed.";
 }
 
 bool WebRtcSession::Initialize(
     const PeerConnectionFactoryInterface::Options& options,
-    std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator,
+    std::unique_ptr<DtlsIdentityStoreInterface> dtls_identity_store,
     const PeerConnectionInterface::RTCConfiguration& rtc_configuration) {
   bundle_policy_ = rtc_configuration.bundle_policy;
   rtcp_mux_policy_ = rtc_configuration.rtcp_mux_policy;
   transport_controller_->SetSslMaxProtocolVersion(options.ssl_max_version);
 
   // Obtain a certificate from RTCConfiguration if any were provided (optional).
   rtc::scoped_refptr<rtc::RTCCertificate> certificate;
   if (!rtc_configuration.certificates.empty()) {
     // TODO(hbos,torbjorng): Decide on certificate-selection strategy instead of
     // just picking the first one. The decision should be made based on the DTLS
     // handshake. The DTLS negotiations need to know about all certificates.
     certificate = rtc_configuration.certificates[0];
   }
 
   SetIceConfig(ParseIceConfig(rtc_configuration));
 
   if (options.disable_encryption) {
     dtls_enabled_ = false;
   } else {
     // Enable DTLS by default if we have an identity store or a certificate.
-    dtls_enabled_ = (cert_generator || certificate);
+    dtls_enabled_ = (dtls_identity_store || certificate);
     // |rtc_configuration| can override the default |dtls_enabled_| value.
     if (rtc_configuration.enable_dtls_srtp) {
       dtls_enabled_ = *(rtc_configuration.enable_dtls_srtp);
     }
   }
 
   // Enable creation of RTP data channels if the kEnableRtpDataChannels is set.
   // It takes precendence over the disable_sctp_data_channels
   // PeerConnectionFactoryInterface::Options.
   if (rtc_configuration.enable_rtp_data_channel) {
@@ skipping 12 matching lines @@
 
   audio_options_.audio_jitter_buffer_max_packets =
       rtc::Optional<int>(rtc_configuration.audio_jitter_buffer_max_packets);
 
   audio_options_.audio_jitter_buffer_fast_accelerate = rtc::Optional<bool>(
       rtc_configuration.audio_jitter_buffer_fast_accelerate);
 
   if (!dtls_enabled_) {
     // Construct with DTLS disabled.
     webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory(
-        signaling_thread(), channel_manager_, this, id(),
-        std::unique_ptr<rtc::RTCCertificateGeneratorInterface>()));
+        signaling_thread(), channel_manager_, this, id()));
   } else {
     // Construct with DTLS enabled.
     if (!certificate) {
+      // Use the |dtls_identity_store| to generate a certificate.
+      RTC_DCHECK(dtls_identity_store);
       webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory(
-          signaling_thread(), channel_manager_, this, id(),
-          std::move(cert_generator)));
+          signaling_thread(), channel_manager_, std::move(dtls_identity_store),
+          this, id()));
     } else {
       // Use the already generated certificate.
       webrtc_session_desc_factory_.reset(new WebRtcSessionDescriptionFactory(
-          signaling_thread(), channel_manager_, this, id(), certificate));
+          signaling_thread(), channel_manager_, certificate, this, id()));
     }
   }
 
   webrtc_session_desc_factory_->SignalCertificateReady.connect(
       this, &WebRtcSession::OnCertificateReady);
 
   if (options.disable_encryption) {
     webrtc_session_desc_factory_->SetSdesPolicy(cricket::SEC_DISABLED);
   }
 
@@ skipping 1600 matching lines @@
                                                   ssl_cipher_suite);
   }
 }
 
 void WebRtcSession::OnSentPacket_w(const rtc::SentPacket& sent_packet) {
   RTC_DCHECK(worker_thread()->IsCurrent());
   media_controller_->call_w()->OnSentPacket(sent_packet);
 }
 
 }  // namespace webrtc