Added DtlsCertificate, a ref counted object owning an SSLIdentity

webrtc/base/opensslstreamadapter.cc

Index: webrtc/base/opensslstreamadapter.cc
diff --git a/webrtc/base/opensslstreamadapter.cc b/webrtc/base/opensslstreamadapter.cc
index 3d1760721f1f55c136306b7fb5f371453fb92ff4..20584ab21b04e4b96b1e2bd293c1fbb375394783 100644
--- a/webrtc/base/opensslstreamadapter.cc
+++ b/webrtc/base/opensslstreamadapter.cc
@@ -298,9 +298,10 @@ OpenSSLStreamAdapter::~OpenSSLStreamAdapter() {
   Cleanup();
 }
 
-void OpenSSLStreamAdapter::SetIdentity(SSLIdentity* identity) {
-  ASSERT(!identity_);
-  identity_.reset(static_cast<OpenSSLIdentity*>(identity));
+void OpenSSLStreamAdapter::SetCertificate(
+    const scoped_refptr<webrtc::DtlsCertificate>& certificate) {
+  ASSERT(!certificate_.get());
+  certificate_ = certificate;
 }
 
 void OpenSSLStreamAdapter::SetServerRole(SSLRole role) {
@@ -877,7 +878,7 @@ void OpenSSLStreamAdapter::Cleanup() {
     SSL_CTX_free(ssl_ctx_);
     ssl_ctx_ = NULL;
   }
-  identity_.reset();
+  certificate_ = nullptr;
   peer_certificate_.reset();
 
   // Clear the DTLS timer
@@ -985,7 +986,9 @@ SSL_CTX* OpenSSLStreamAdapter::SetupSSLContext() {
   }
 #endif
 
-  if (identity_ && !identity_->ConfigureIdentity(ctx)) {
+  if (certificate_.get() &&
+      !static_cast<OpenSSLIdentity*>(certificate_->identity())
+          ->ConfigureIdentity(ctx)) {
     SSL_CTX_free(ctx);
     return NULL;
   }