Add dart:html and friends to patched_dart2js_sdk/platform.dill, also fix up

sdk/lib/html/html_common/css_class_set.dart

 // Copyright (c) 2012, 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.
 
 part of html_common;
 
 abstract class CssClassSetImpl implements CssClassSet {
   static final RegExp _validTokenRE = new RegExp(r'^\S+$');
 
   String _validateToken(String value) {
@@ skipping 37 matching lines @@
   Iterator<String> get iterator => readClasses().iterator;
   // interface Iterable - END
 
   // interface Collection - BEGIN
   void forEach(void f(String element)) {
     readClasses().forEach(f);
   }
 
   String join([String separator = ""]) => readClasses().join(separator);
 
-  Iterable/*<T>*/ map/*<T>*/(/*=T*/ f(String e)) => readClasses().map/*<T>*/(f);
+  Iterable<T> map<T>(T f(String e)) => readClasses().map<T>(f);
 
   Iterable<String> where(bool f(String element)) => readClasses().where(f);
 
-  Iterable/*<T>*/ expand/*<T>*/(Iterable/*<T>*/ f(String element)) =>
-      readClasses().expand/*<T>*/(f);
+  Iterable<T> expand<T>(Iterable<T> f(String element)) =>
+      readClasses().expand<T>(f);
 
   bool every(bool f(String element)) => readClasses().every(f);
 
   bool any(bool f(String element)) => readClasses().any(f);
 
   bool get isEmpty => readClasses().isEmpty;
 
   bool get isNotEmpty => readClasses().isNotEmpty;
 
   int get length => readClasses().length;
 
   String reduce(String combine(String value, String element)) {
     return readClasses().reduce(combine);
   }
 
-  dynamic/*=T*/ fold/*<T>*/(var/*=T*/ initialValue,
-      dynamic/*=T*/ combine(var/*=T*/ previousValue, String element)) {
-    return readClasses().fold/*<T>*/(initialValue, combine);
+  T fold<T>(T initialValue, T combine(T previousValue, String element)) {
+    return readClasses().fold<T>(initialValue, combine);
   }
 
   // interface Collection - END
 
   // interface Set - BEGIN
   /**
    * Determine if this element contains the class [value].
    *
    * This is the Dart equivalent of jQuery's
    * [hasClass](http://api.jquery.com/hasClass/).
@@ skipping 142 matching lines @@
    */
   Set<String> readClasses();
 
   /**
    * Join all the elements of a set into one string and write
    * back to the element.
    * This is intended to be overridden by specific implementations.
    */
   void writeClasses(Set<String> s);
 }