Adds support for remaining generic method syntax constructs.

pkg/compiler/lib/src/scanner/array_based_scanner.dart

 // Copyright (c) 2011, 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.
 
 library dart2js.scanner.array_based;
 
 import '../io/source_file.dart' show SourceFile;
 import '../tokens/keyword.dart' show Keyword;
 import '../tokens/precedence.dart' show PrecedenceInfo;
 import '../tokens/precedence_constants.dart' as Precedence
@@ skipping 45 matching lines @@
       appendPrecedenceToken(no);
       return next;
     }
   }
 
   /**
    * Appends a keyword token whose kind is determined by [keyword].
    */
   void appendKeywordToken(Keyword keyword) {
     String syntax = keyword.syntax;
-    // Type parameters and arguments cannot contain 'this' or 'super'.
-    if (identical(syntax, 'this') || identical(syntax, 'super')) {
+    // Type parameters and arguments cannot contain 'this'.
+    if (identical(syntax, 'this')) {
       discardOpenLt();
     }
     tail.next = new KeywordToken(keyword, tokenStart);
     tail = tail.next;
   }
 
   void appendEofToken() {
     beginToken();
     discardOpenLt();
     while (!groupingStack.isEmpty) {
@@ skipping 147 matching lines @@
    * something which cannot possibly be part of a type parameter/argument
    * list, like the '=' in the above example.
    */
   void discardOpenLt() {
     while (!groupingStack.isEmpty &&
         identical(groupingStack.head.kind, Tokens.LT_TOKEN)) {
       groupingStack = groupingStack.tail;
     }
   }
 }