Add option to enable ECDSA key for Java API.

talk/app/webrtc/dtlsidentitystore.h

 /*
  * libjingle
  * Copyright 2015 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 22 matching lines @@
 
 #include "webrtc/base/messagehandler.h"
 #include "webrtc/base/messagequeue.h"
 #include "webrtc/base/refcount.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/base/sslidentity.h"
 #include "webrtc/base/thread.h"
 
 namespace webrtc {
+
+// Passed to SSLIdentity::Generate.
+extern const char kIdentityName[];
+
 class SSLIdentity;
 class Thread;
 
 // Used to receive callbacks of DTLS identity requests.
 class DtlsIdentityRequestObserver : public rtc::RefCountInterface {
  public:
   virtual void OnFailure(int error) = 0;
   // TODO(hbos): Unify the OnSuccess method once Chrome code is updated.
   virtual void OnSuccess(const std::string& der_cert,
                          const std::string& der_private_key) = 0;
@@ skipping 83 matching lines @@
     rtc::scoped_ptr<rtc::SSLIdentity> free_identity_;
   };
 
   // One RequestInfo per KeyType. Only touch on the |signaling_thread_|.
   RequestInfo request_info_[rtc::KT_LAST];
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_DTLSIDENTITYSTORE_H_