Added DtlsCertificate, a ref counted object owning an SSLIdentity

talk/app/webrtc/peerconnectionfactory.h

Index: talk/app/webrtc/peerconnectionfactory.h
diff --git a/talk/app/webrtc/peerconnectionfactory.h b/talk/app/webrtc/peerconnectionfactory.h
index d6bf03f3d1e9f4f3c08c42e2185e0b7918f605ca..0ee73b1688ae1b964ef7e173d1fbbf3a2922c8a9 100644
--- a/talk/app/webrtc/peerconnectionfactory.h
+++ b/talk/app/webrtc/peerconnectionfactory.h
@@ -46,13 +46,22 @@ class PeerConnectionFactory : public PeerConnectionFactoryInterface {
     options_ = options;
   }
 
+  // This method takes the ownership of |dtls_identity_service|.
   virtual rtc::scoped_refptr<PeerConnectionInterface>
       CreatePeerConnection(
           const PeerConnectionInterface::RTCConfiguration& configuration,
           const MediaConstraintsInterface* constraints,
           PortAllocatorFactoryInterface* allocator_factory,
           DTLSIdentityServiceInterface* dtls_identity_service,
-          PeerConnectionObserver* observer);
+          PeerConnectionObserver* observer) override;
+
+  virtual rtc::scoped_refptr<PeerConnectionInterface>
+      CreatePeerConnection(
+          const PeerConnectionInterface::RTCConfiguration& configuration,
+          const MediaConstraintsInterface* constraints,
+          PortAllocatorFactoryInterface* allocator_factory,
+          rtc::scoped_refptr<DtlsCertificate> certificate,
+          PeerConnectionObserver* observer) override;
 
   bool Initialize();
 
@@ -92,6 +101,8 @@ class PeerConnectionFactory : public PeerConnectionFactoryInterface {
   virtual ~PeerConnectionFactory();
 
  private:
+  PortAllocatorFactoryInterface* CreatePeerConnectionCommon(
+      PortAllocatorFactoryInterface* allocator_factory);
   cricket::MediaEngineInterface* CreateMediaEngine_w();
 
   bool owns_ptrs_;