Removed DARTIUM codegen for IDLS (sdk/lib/dartium)

tools/dom/templates/html/impl/impl_RTCPeerConnection.darttemplate

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of $LIBRARYNAME;
 
 $(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
-$if DART2JS
   factory $CLASSNAME(Map rtcIceServers, [Map mediaConstraints]) {
     var constructorName = JS('RtcPeerConnection', 'window[#]',
         '${Device.propertyPrefix}RTCPeerConnection');
     if (mediaConstraints != null) {
       return JS('RtcPeerConnection', 'new #(#,#)', constructorName,
           convertDartToNative_SerializedScriptValue(rtcIceServers),
           convertDartToNative_SerializedScriptValue(mediaConstraints));
     } else {
       return JS('RtcPeerConnection', 'new #(#)', constructorName,
           convertDartToNative_SerializedScriptValue(rtcIceServers));
     }
   }
-$endif
 
   /**
    * Checks if Real Time Communication (RTC) APIs are supported and enabled on
    * the current platform.
    */
-$if DART2JS
   static bool get supported {
     // Currently in Firefox some of the RTC elements are defined but throw an
     // error unless the user has specifically enabled them in their
     // about:config. So we have to construct an element to actually test if RTC
     // is supported at the given time.
     try {
       new RtcPeerConnection(
           {"iceServers": [ {"url":"stun:localhost"}]});
       return true;
     } catch (_) { return false;}
     return false;
   }
-$else
-  static bool get supported => true;
-$endif
   Future<RtcSessionDescription> createOffer([Map mediaConstraints]) {
     var completer = new Completer<RtcSessionDescription>();
     _createOffer(
         (value) { completer.complete(value); },
         (error) { completer.completeError(error); }, mediaConstraints);
     return completer.future;
   }
 
   Future<RtcSessionDescription> createAnswer([Map mediaConstraints]) {
     var completer = new Completer<RtcSessionDescription>();
     _createAnswer(
         (value) { completer.complete(value); },
         (error) { completer.completeError(error); }, mediaConstraints);
     return completer.future;
   }
 
   @DomName('RTCPeerConnection.getStats')
   Future<RtcStatsResponse> getStats(MediaStreamTrack selector) {
     var completer = new Completer<RtcStatsResponse>();
     _getStats((value) { completer.complete(value); }, selector);
     return completer.future;
   }
 
   @DomName('RTCPeerConnection.generateCertificate')
   @DocsEditable()
   @Experimental() // untriaged
   static Future generateCertificate(/*AlgorithmIdentifier*/ keygenAlgorithm) =>
-$if DART2JS
       JS('dynamic', 'generateCertificate(#)', keygenAlgorithm);
-$else
-      convertNativePromiseToDartFuture(_blink.BlinkRTCPeerConnection.instance
-          .generateCertificate_Callback_1_(keygenAlgorithm));
-$endif
 
 $!MEMBERS
 }