Merging dart:html interfaces and implementations

lib/html/templates/html/dartium/html_dartium.darttemplate

Index: lib/html/templates/html/dartium/html_dartium.darttemplate
diff --git a/lib/html/templates/html/dartium/html_dartium.darttemplate b/lib/html/templates/html/dartium/html_dartium.darttemplate
index 4225d60d6ae18935f2aae0a112fe62b6693a6386..4d3fb1e7f05f5c3f5b2079ac0482a6bc122e417e 100644
--- a/lib/html/templates/html/dartium/html_dartium.darttemplate
+++ b/lib/html/templates/html/dartium/html_dartium.darttemplate
@@ -45,22 +45,19 @@ LocalWindow get window {
   return __window;
 }
 
-LocalWindow get _window native "Utils_window";
-
 Document __document;
 
 Document get document {
   if (__document != null) {
     return __document;
   }
-  __document = _document;
+  __document = window.document;
   return __document;
 }
 
-Document get _document => _window.document;
 
-Element query(String selector) => _document.query(selector);
-List<Element> queryAll(String selector) => _document.queryAll(selector);
+Element query(String selector) => document.query(selector);
+List<Element> queryAll(String selector) => document.queryAll(selector);
 
 int _getNewIsolateId() => _Utils._getNewIsolateId();