Make core libraries use generic method syntax.

runtime/lib/convert_patch.dart

 // Copyright (c) 2014, 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.
 
 import "dart:_internal" show POWERS_OF_TEN;
 
 // JSON conversion.
 
 @patch _parseJson(String json, reviver(var key, var value)) {
   _BuildJsonListener listener;
   if (reviver == null) {
     listener = new _BuildJsonListener();
   } else {
     listener = new _ReviverJsonListener(reviver);
   }
   var parser = new _JsonStringParser(listener);
   parser.chunk = json;
   parser.chunkEnd = json.length;
   parser.parse(0);
   parser.close();
   return listener.result;
 }
 
 @patch class Utf8Decoder {
   @patch
-  Converter<List<int>, dynamic/*=T*/> fuse/*<T>*/(
-      Converter<String, dynamic/*=T*/> next) {
+  Converter<List<int>, T> fuse<T>(
+      Converter<String, T> next) {
     if (next is JsonDecoder) {
       return new _JsonUtf8Decoder(next._reviver, this._allowMalformed)
           as dynamic/*=Converter<List<int>, T>*/;
     }
     // TODO(lrn): Recognize a fused decoder where the next step is JsonDecoder.
     return super.fuse/*<T>*/(next);
   }
 
   // Allow intercepting of UTF-8 decoding when built-in lists are passed.
   @patch
@@ skipping 1729 matching lines @@
     _parser.parse(start);
   }
 
   void close() {
     _parser.close();
     var decoded = _parser.result;
     _sink.add(decoded);
     _sink.close();
   }
 }