Don't put private members in dart:html interfaces.

client/html/generated/html/interface/Window.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.
 
 // WARNING: Do not edit - generated code.
 
 interface Window extends EventTarget {
 
   final Document document;
 
@@ skipping 102 matching lines @@
   final Window top;
 
   final IDBFactory webkitIndexedDB;
 
   final NotificationCenter webkitNotifications;
 
   final StorageInfo webkitStorageInfo;
 
   final Window window;
 
-  void _addEventListener(String type, EventListener listener, [bool useCapture]);
-
   void alert(String message);
 
   String atob(String string);
 
   void blur();
 
   String btoa(String string);
 
   void captureEvents();
 
   void clearInterval(int handle);
 
   void clearTimeout(int handle);
 
   void close();
 
   bool confirm(String message);
 
-  bool _dispatchEvent(Event evt);
-
   bool find(String string, bool caseSensitive, bool backwards, bool wrap, bool wholeWord, bool searchInFrames, bool showDialog);
 
   void focus();
 
-  CSSStyleDeclaration _getComputedStyle(Element element, String pseudoElement);
-
   CSSRuleList getMatchedCSSRules(Element element, String pseudoElement);
 
   DOMSelection getSelection();
 
   MediaQueryList matchMedia(String query);
 
   void moveBy(num x, num y);
 
   void moveTo(num x, num y);
 
   Window open(String url, String name, [String options]);
 
   Database openDatabase(String name, String version, String displayName, int estimatedSize, [DatabaseCallback creationCallback]);
 
   void postMessage(Dynamic message, String targetOrigin, [List messagePorts]);
 
   void print();
 
   String prompt(String message, String defaultValue);
 
   void releaseEvents();
 
-  void _removeEventListener(String type, EventListener listener, [bool useCapture]);
-
   void resizeBy(num x, num y);
 
   void resizeTo(num width, num height);
 
   void scroll(int x, int y);
 
   void scrollBy(int x, int y);
 
   void scrollTo(int x, int y);
 
@@ skipping 166 matching lines @@
   EventListenerList get touchStart();
 
   EventListenerList get transitionEnd();
 
   EventListenerList get unload();
 
   EventListenerList get volumeChange();
 
   EventListenerList get waiting();
 }