Remove unnecessary List creation

pkg/analyzer/lib/src/generated/parser.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.parser;
 
 import 'dart:collection';
@@ skipping 4580 matching lines @@
         if (StringUtilities.startsWith3(commentToken.lexeme, 0, 0x2F, 0x2A, 0x2A)) {
           commentTokens.clear();
           commentTokens.add(commentToken);
         }
       }
       commentToken = commentToken.next;
     }
     if (commentTokens.isEmpty) {
       return null;
     }
-    List<Token> tokens = new List.from(commentTokens);
-    List<CommentReference> references = _parseCommentReferences(tokens);
-    return Comment.createDocumentationCommentWithReferences(tokens, references);
+    List<CommentReference> references = _parseCommentReferences(commentTokens);
+    return Comment.createDocumentationCommentWithReferences(commentTokens, references);
   }
 
   /**
    * Parse a do statement.
    *
    * <pre>
    * doStatement ::=
    *     'do' statement 'while' '(' expression ')' ';'
    * </pre>
    *
@@ skipping 1821 matching lines @@
         }
       }
     } else if (_currentToken.isOperator) {
       components.add(andAdvance);
     } else if (_tokenMatchesKeyword(_currentToken, Keyword.VOID)) {
       components.add(andAdvance);
     } else {
       _reportErrorForCurrentToken(ParserErrorCode.MISSING_IDENTIFIER, []);
       components.add(_createSyntheticToken(TokenType.IDENTIFIER));
     }
-    return new SymbolLiteral(poundSign, new List.from(components));
+    return new SymbolLiteral(poundSign, components);
   }
 
   /**
    * Parse a throw expression.
    *
    * <pre>
    * throwExpression ::=
    *     'throw' expression
    * </pre>
    *
@@ skipping 3070 matching lines @@
         return trampoline(target, arguments[0], arguments[1]);
       case 3:
         return trampoline(target, arguments[0], arguments[1], arguments[2]);
       case 4:
         return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
       default:
         throw new IllegalArgumentException("Not implemented for > 4 arguments");
     }
   }
 }