Get rid of a lot of () for getters.

lib/core/string.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.
 
 /**
  * The String class represents character strings. Strings are
  * immutable. A string is represented by a list of 32-bit Unicode
  * scalar character codes accessible through the [charCodeAt] or the
  * [charCodes] method.
  */
@@ skipping 11 matching lines @@
   String operator [](int index);
 
   /**
    * Gets the scalar character code at the given [index].
    */
   int charCodeAt(int index);
 
   /**
    * The length of the string.
    */
-  int get length();
+  int get length;
 
   /**
    * Returns whether the two strings are equal. This method compares
    * each individual scalar character codes of the strings.
    */
   bool operator ==(String other);
 
   /**
    * Returns whether this string ends with [other].
    */
@@ skipping 80 matching lines @@
    * where all characters  are made lower case. Returns [:this:] otherwise.
    */
   String toLowerCase();
 
   /**
    * If this string is not already all uper case, returns a new string
    * where all characters are made upper case. Returns [:this:] otherwise.
    */
   String toUpperCase();
 }