Provide RSA2048 as per RFC

webrtc/base/sslidentity.cc

Index: webrtc/base/sslidentity.cc
diff --git a/webrtc/base/sslidentity.cc b/webrtc/base/sslidentity.cc
index ce209dd4167c2211fdc80649be4dca7a48b3b487..b3336ea9ee8096e3a173060999a063e355b9107d 100644
--- a/webrtc/base/sslidentity.cc
+++ b/webrtc/base/sslidentity.cc
@@ -108,8 +108,8 @@ SSLCertificate* SSLCertificate::FromPEMString(const std::string& pem_string) {
 }
 
 SSLIdentity* SSLIdentity::Generate(const std::string& common_name,
-                                   KeyType key_type) {
-  return OpenSSLIdentity::Generate(common_name, key_type);
+                                   const KeyParams& key_params) {
+  return OpenSSLIdentity::Generate(common_name, key_params);
 }
 
 SSLIdentity* SSLIdentity::GenerateForTest(const SSLIdentityParams& params) {