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 51921f143153a171b3573edabd571f265fc9fe22..a134e1449607ad65aa66b6e87c0ea69dca243a18 100644
--- a/webrtc/base/opensslstreamadapter.cc
+++ b/webrtc/base/opensslstreamadapter.cc
@@ -290,9 +290,10 @@ OpenSSLStreamAdapter::~OpenSSLStreamAdapter() {
   Cleanup();
 }
 
-void OpenSSLStreamAdapter::SetIdentity(SSLIdentity* identity) {
-  ASSERT(!identity_);
-  identity_.reset(static_cast<OpenSSLIdentity*>(identity));
+void OpenSSLStreamAdapter::SetCertificate(
+    scoped_refptr<webrtc::DtlsCertificate> certificate) {
+  ASSERT(!certificate_.get());
+  certificate_ = certificate;
 }
 
 void OpenSSLStreamAdapter::SetServerRole(SSLRole role) {
@@ -869,7 +870,7 @@ void OpenSSLStreamAdapter::Cleanup() {
     SSL_CTX_free(ssl_ctx_);
     ssl_ctx_ = NULL;
   }
-  identity_.reset();
+  certificate_ = nullptr;
   peer_certificate_.reset();
 
   // Clear the DTLS timer
@@ -977,7 +978,9 @@ 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;
   }