Use Init dictionaries in RTCPeerConnection legacy methods.

third_party/WebKit/Source/modules/mediastream/RTCIceCandidate.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "modules/mediastream/RTCIceCandidate.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/dom/ExceptionCode.h"
+#include "core/dom/ExecutionContext.h"
+#include "core/frame/UseCounter.h"
 #include "modules/mediastream/RTCIceCandidateInit.h"
 
 namespace blink {
 
-RTCIceCandidate* RTCIceCandidate::create(const RTCIceCandidateInit& candidateInit, ExceptionState& exceptionState)
+RTCIceCandidate* RTCIceCandidate::create(ExecutionContext* context, const RTCIceCandidateInit& candidateInit, ExceptionState& exceptionState)
 {
     if (!candidateInit.hasCandidate() || !candidateInit.candidate().length()) {
         exceptionState.throwDOMException(TypeMismatchError, ExceptionMessages::incorrectPropertyType("candidate", "is not a string, or is empty."));
         return nullptr;
     }
 
     String sdpMid;
     if (candidateInit.hasSdpMid())
         sdpMid = candidateInit.sdpMid();
 
+    // TODO(guidou): Change default value to -1. crbug.com/614958.
     unsigned short sdpMLineIndex = 0;
     if (candidateInit.hasSdpMLineIndex())
         sdpMLineIndex = candidateInit.sdpMLineIndex();
+    else
+        UseCounter::count(context, UseCounter::RTCIceCandidateDefaultSdpMLineIndex);
 
     return new RTCIceCandidate(WebRTCICECandidate(candidateInit.candidate(), sdpMid, sdpMLineIndex));
 }
 
 RTCIceCandidate* RTCIceCandidate::create(WebRTCICECandidate webCandidate)
 {
     return new RTCIceCandidate(webCandidate);
 }
 
 RTCIceCandidate::RTCIceCandidate(WebRTCICECandidate webCandidate)
@@ skipping 39 matching lines @@
 ScriptValue RTCIceCandidate::toJSONForBinding(ScriptState* scriptState)
 {
     V8ObjectBuilder result(scriptState);
     result.addString("candidate", m_webCandidate.candidate());
     result.addString("sdpMid", m_webCandidate.sdpMid());
     result.addNumber("sdpMLineIndex", m_webCandidate.sdpMLineIndex());
     return result.scriptValue();
 }
 
 } // namespace blink