Add option to enable ECDSA key for Java API.

webrtc/base/sslidentity.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 89 matching lines @@
   }
 
   // Helper function for deleting a vector of certificates.
   static void DeleteCert(SSLCertificate* cert) { delete cert; }
 
   std::vector<SSLCertificate*> certs_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLCertChain);
 };
 
+// TODO(hbos, torbjorng): Don't change KT_DEFAULT without first
+// updating PeerConnectionFactory_nativeCreatePeerConnection's certificate
+// generation code.
 enum KeyType { KT_RSA, KT_ECDSA, KT_LAST, KT_DEFAULT = KT_RSA };
 
 // Parameters for generating an identity for testing. If common_name is
 // non-empty, it will be used for the certificate's subject and issuer name,
 // otherwise a random string will be used. |not_before| and |not_after| are
 // offsets to the current time in number of seconds.
 struct SSLIdentityParams {
   std::string common_name;
   int not_before;  // in seconds.
   int not_after;  // in seconds.
@@ skipping 40 matching lines @@
                               size_t length);
 };
 
 extern const char kPemTypeCertificate[];
 extern const char kPemTypeRsaPrivateKey[];
 extern const char kPemTypeEcPrivateKey[];
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_SSLIDENTITY_H_