Migrate dom tests to dart:html.

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

Index: lib/dom/templates/html/dartium/html_dartium.darttemplate
diff --git a/lib/dom/templates/html/dartium/html_dartium.darttemplate b/lib/dom/templates/html/dartium/html_dartium.darttemplate
index 7e41a3467668c1c7eabb3e2c2db822afa11099f2..4338760072e15515019f6ee40418fc46bbfae486 100644
--- a/lib/dom/templates/html/dartium/html_dartium.darttemplate
+++ b/lib/dom/templates/html/dartium/html_dartium.darttemplate
@@ -7,7 +7,7 @@
 
 #library("html");
 
-#import('dart:dom', prefix:'dom');
+#import('dart:dom_deprecated', prefix:'dom');
 
 $!GENERATED_DART_FILES
 
@@ -82,3 +82,9 @@ $WRAPCASES
       throw 'Unrecognized object $domObject. Name=${domObject.typeName}';
   }
 }
+
+spawnDomIsolate(Window targetWindow, String entryPoint) =>
+  dom.spawnDomIsolateImpl(_unwrap(targetWindow), entryPoint);
+
+dom.LayoutTestController get layoutTestController() =>
+  dom.layoutTestController;