Change scripts to avoid generating things that bloat the compiled code

sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index 10c20cf3cd70b7760fa3f782f1feae630122f553..bbdbe34955346685abf3f82395dc198165380019 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -6594,20 +6594,11 @@ class CssStyleDeclaration  extends DartHtmlDomObject with
   @DocsEditable()
   CssRule get parentRule => wrap_jso(_blink.BlinkCSSStyleDeclaration.instance.parentRule_Getter_(unwrap_jso(this)));
   
-  @DomName('CSSStyleDeclaration.__getter__')
-  @DocsEditable()
-  @Experimental() // untriaged
-  Object __getter__(String name) => wrap_jso(_blink.BlinkCSSStyleDeclaration.instance.$__getter___Callback_1_(unwrap_jso(this), name));
-  
   @DomName('CSSStyleDeclaration.__propertyQuery__')
   @DocsEditable()
   @Experimental() // untriaged
   bool __propertyQuery__(String name) => _blink.BlinkCSSStyleDeclaration.instance.$__propertyQuery___Callback_1_(unwrap_jso(this), name);
   
-  @DomName('CSSStyleDeclaration.__setter__')
-  @DocsEditable()
-  void __setter__(String property, String propertyValue) => _blink.BlinkCSSStyleDeclaration.instance.$__setter___Callback_2_(unwrap_jso(this), property, propertyValue);
-  
   @DomName('CSSStyleDeclaration.getPropertyPriority')
   @DocsEditable()
   String getPropertyPriority(String property) => _blink.BlinkCSSStyleDeclaration.instance.getPropertyPriority_Callback_1_(unwrap_jso(this), property);
@@ -35611,17 +35602,27 @@ class ServiceWorkerGlobalScope extends WorkerGlobalScope {
   Stream<MessageEvent> get onMessage => messageEvent.forTarget(this);
 
 }
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, 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.
 
 
-@DocsEditable()
+// TODO(alanknight): Provide a nicer constructor that uses named parameters
+// rather than an initialization map.
 @DomName('ServiceWorkerMessageEvent')
 @Experimental() // untriaged
 class ServiceWorkerMessageEvent extends Event {
+
+  // TODO(alanknight): This really should be generated by the
+  // _OutputConversion in the systemnative.py script, but that doesn't
+  // use those conversions right now, so do this as a one-off.
+  @DomName('ServiceWorkerMessageEvent.data')
+  @DocsEditable()
+  dynamic get data => convertNativeToDart_SerializedScriptValue(
+      _blink.BlinkMessageEvent.instance.data_Getter_(unwrap_jso(this)));
+
   // To suppress missing implicit constructor warnings.
   factory ServiceWorkerMessageEvent._() { throw new UnsupportedError("Not supported"); }
 
@@ -35647,11 +35648,6 @@ class ServiceWorkerMessageEvent extends Event {
   ServiceWorkerMessageEvent.internal_() : super.internal_();
 
 
-  @DomName('ServiceWorkerMessageEvent.data')
-  @DocsEditable()
-  @Experimental() // untriaged
-  Object get data => wrap_jso(_blink.BlinkServiceWorkerMessageEvent.instance.data_Getter_(unwrap_jso(this)));
-  
   @DomName('ServiceWorkerMessageEvent.lastEventId')
   @DocsEditable()
   @Experimental() // untriaged
@@ -40357,10 +40353,10 @@ class Url extends DartHtmlDomObject implements UrlUtils {
     if ((blob_OR_source_OR_stream is Blob || blob_OR_source_OR_stream == null)) {
       return _blink.BlinkURL.instance.createObjectURL_Callback_1_(unwrap_jso(blob_OR_source_OR_stream));
     }
-    if ((blob_OR_source_OR_stream is MediaStream)) {
+    if ((blob_OR_source_OR_stream is MediaSource)) {
       return _blink.BlinkURL.instance.createObjectURL_Callback_1_(unwrap_jso(blob_OR_source_OR_stream));
     }
-    if ((blob_OR_source_OR_stream is MediaSource)) {
+    if ((blob_OR_source_OR_stream is MediaStream)) {
       return _blink.BlinkURL.instance.createObjectURL_Callback_1_(unwrap_jso(blob_OR_source_OR_stream));
     }
     throw new ArgumentError("Incorrect number or type of arguments");