Ability to specify KeyType (RSA, ECDSA) for SSLIdentity generation in libjingle

webrtc/base/sslidentity.cc

Index: webrtc/base/sslidentity.cc
diff --git a/webrtc/base/sslidentity.cc b/webrtc/base/sslidentity.cc
index ea9f547a87d812cac35fac39ad562c15d1103afd..c6a1b6b52351644a13b191260d0641c8a5955995 100644
--- a/webrtc/base/sslidentity.cc
+++ b/webrtc/base/sslidentity.cc
@@ -38,6 +38,12 @@ namespace rtc {
 const char kPemTypeCertificate[] = "CERTIFICATE";
 const char kPemTypeRsaPrivateKey[] = "RSA PRIVATE KEY";
 
+static const std::string key_type_names[] { "KT_RSA", "KT_ECDSA" };
+
+std::string KeyTypeToString(KeyType key_type) {
+  return key_type_names[key_type];
+}
+
 bool SSLIdentity::PemToDer(const std::string& pem_type,
                            const std::string& pem_string,
                            std::string* der) {