Merging dart:html interfaces and implementations

sdk/lib/html/src/shared_FactoryProviders.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.
 
 class _CustomEventFactoryProvider {
   static CustomEvent createCustomEvent(String type, [bool canBubble = true,
       bool cancelable = true, Object detail = null]) {
-    final _CustomEventImpl e = _document.$dom_createEvent("CustomEvent");
+    final CustomEvent e = document.$dom_createEvent("CustomEvent");
     e.$dom_initCustomEvent(type, canBubble, cancelable, detail);
     return e;
   }
 }
 
 class _EventFactoryProvider {
   static Event createEvent(String type, [bool canBubble = true,
       bool cancelable = true]) {
-    final _EventImpl e = _document.$dom_createEvent("Event");
+    final Event e = document.$dom_createEvent("Event");
     e.$dom_initEvent(type, canBubble, cancelable);
     return e;
   }
 }
 
 class _MouseEventFactoryProvider {
   static MouseEvent createMouseEvent(String type, Window view, int detail,
       int screenX, int screenY, int clientX, int clientY, int button,
       [bool canBubble = true, bool cancelable = true, bool ctrlKey = false,
       bool altKey = false, bool shiftKey = false, bool metaKey = false,
       EventTarget relatedTarget = null]) {
-    final e = _document.$dom_createEvent("MouseEvent");
+    final e = document.$dom_createEvent("MouseEvent");
     e.$dom_initMouseEvent(type, canBubble, cancelable, view, detail,
         screenX, screenY, clientX, clientY, ctrlKey, altKey, shiftKey, metaKey,
         button, relatedTarget);
     return e;
   }
 }
 
 class _CSSStyleDeclarationFactoryProvider {
   static CSSStyleDeclaration createCSSStyleDeclaration_css(String css) {
     final style = new Element.tag('div').style;
@@ skipping 37 matching lines @@
     // Copy list first since we don't want liveness during iteration.
     final List nodes = new List.from(e.nodes);
     fragment.nodes.addAll(nodes);
     return fragment;
   }
 }
 
 class _SVGElementFactoryProvider {
   static SVGElement createSVGElement_tag(String tag) {
     final Element temp =
-      _document.$dom_createElementNS("http://www.w3.org/2000/svg", tag);
+      document.$dom_createElementNS("http://www.w3.org/2000/svg", tag);
     return temp;
   }
 
   static SVGElement createSVGElement_svg(String svg) {
     Element parentTag;
     final match = _START_TAG_REGEXP.firstMatch(svg);
     if (match != null && match.group(1).toLowerCase() == 'svg') {
       parentTag = new Element.tag('div');
     } else {
       parentTag = new SVGSVGElement();
     }
 
     parentTag.innerHTML = svg;
     if (parentTag.elements.length == 1) return parentTag.elements.removeLast();
 
     throw new ArgumentError(
         'SVG had ${parentTag.elements.length} '
         'top-level elements but 1 expected');
   }
 }
 
 class _SVGSVGElementFactoryProvider {
   static SVGSVGElement createSVGSVGElement() {
     final el = new SVGElement.tag("svg");
     // The SVG spec requires the version attribute to match the spec version
     el.attributes['version'] = "1.1";
     return el;
   }
 }