Added DtlsCertificate, a ref counted object owning an SSLIdentity

talk/app/webrtc/dtlscertificate.cc

 /*
  * 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,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
  *  3. The name of the author may not be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#import "RTCAVFoundationVideoSource.h"
+#include "talk/app/webrtc/dtlscertificate.h"
 
-#include "avfoundationvideocapturer.h"
+#include "webrtc/base/checks.h"
 
-@interface RTCAVFoundationVideoSource ()
+namespace webrtc {
 
-@property(nonatomic, readonly) webrtc::AVFoundationVideoCapturer* capturer;
+rtc::scoped_refptr<DtlsCertificate> DtlsCertificate::Create(
+    rtc::scoped_ptr<rtc::SSLIdentity> identity) {
+  return new rtc::RefCountedObject<DtlsCertificate>(identity.release());
+}
 
-@end
+DtlsCertificate::DtlsCertificate(rtc::SSLIdentity* identity)
+    : identity_(identity) {
+  DCHECK(identity_);
+}
+
+DtlsCertificate::~DtlsCertificate() {
+}
+
+}  // namespace webrtc