RTCCertificate serialization.

webrtc/base/rtccertificate.cc

Index: webrtc/base/rtccertificate.cc
diff --git a/webrtc/base/rtccertificate.cc b/webrtc/base/rtccertificate.cc
index 7b764bd72e66faa2a63afb49894f61414ca15d08..175b3aca237e75105a96ee19696ef75726c437ff 100644
--- a/webrtc/base/rtccertificate.cc
+++ b/webrtc/base/rtccertificate.cc
@@ -43,4 +43,16 @@ const SSLCertificate& RTCCertificate::ssl_certificate() const {
   return identity_->certificate();
 }
 
+RTCCertificatePem RTCCertificate::ToPem() const {
+  return RTCCertificatePem(identity_->PrivateKeyToPemString(),
+                           ssl_certificate().ToPEMString());
+}
+
+scoped_refptr<RTCCertificate> RTCCertificate::FromPem(
+    const RTCCertificatePem& pem) {
+  scoped_ptr<SSLIdentity> identity(SSLIdentity::FromPEMStrings(
+      pem.private_key(), pem.certificate()));
+  return new RefCountedObject<RTCCertificate>(identity.release());
+}
+
 }  // namespace rtc