Make hashCode a getter and not a method.

lib/compiler/implementation/js_backend/namer.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.
 
 /**
  * Assigns JavaScript identifiers to Dart variables, class-names and members.
  */
 class Namer {
   final Compiler compiler;
 
@@ skipping 64 matching lines @@
   // We sometimes handle continue targets differently from break targets,
   // so we have special continue-only labels.
   String continueLabelName(LabelElement label) {
     return 'c\$${label.labelName}\$${label.target.nestingLevel}';
   }
 
   String implicitContinueLabelName(TargetElement target) {
     return 'c\$${target.nestingLevel}';
   }
 
+  /**
+   * If the [name] is not private returns [:name.slowToString():]. Otherwise
+   * mangles the [name] so that each library has a unique name.
+   */
   String privateName(LibraryElement lib, SourceString name) {
     if (name.isPrivate()) {
       String nameString = name.slowToString();
       // The first library asking for a short private name wins.
       LibraryElement owner =
           shortPrivateNameOwners.putIfAbsent(nameString, () => lib);
       // If a private name could clash with a mangled private name we don't
       // use the short name. For example a private name "_lib3_foo" would
       // clash with "_foo" from "lib3".
       if (identical(owner, lib) && !nameString.startsWith('_$LIBRARY_PREFIX')) {
@@ skipping 61 matching lines @@
     return safeName('$libName\$$clsName\$$instanceName');
   }
 
   String setterName(LibraryElement lib, SourceString name) {
     // We dynamically create setters from the field-name. The setter name must
     // therefore be derived from the instance field-name.
     String fieldName = safeName(privateName(lib, name));
     return 'set\$$fieldName';
   }
 
+  String publicGetterName(SourceString name) {
+    // We dynamically create getters from the field-name. The getter name must
+    // therefore be derived from the instance field-name.
+    String fieldName = safeName(name.slowToString());
+    return 'get\$$fieldName';
+  }
+
   String getterName(LibraryElement lib, SourceString name) {
     // We dynamically create getters from the field-name. The getter name must
     // therefore be derived from the instance field-name.
     String fieldName = safeName(privateName(lib, name));
     return 'get\$$fieldName';
   }
 
   String getFreshGlobalName(String proposedName) {
     String name = proposedName;
     int count = usedGlobals[name];
@@ skipping 135 matching lines @@
   }
 
   String safeName(String name) {
     if (jsReserved.contains(name) || name.startsWith('\$')) {
       name = "\$$name";
       assert(!jsReserved.contains(name));
     }
     return name;
   }
 }