Suppress generation of JsGlobal and JsType code and use window as the default value instead of {} f…

lib/src/codegen/html_codegen.dart

Index: lib/src/codegen/html_codegen.dart
diff --git a/lib/src/codegen/html_codegen.dart b/lib/src/codegen/html_codegen.dart
index 06fb7c6f43edb5c6119bbc1671c03c3bbee2a674..8ddd34495a57307edc6a3be610ac6c827333c219 100644
--- a/lib/src/codegen/html_codegen.dart
+++ b/lib/src/codegen/html_codegen.dart
@@ -109,6 +109,5 @@ Node get _miniMockSdk => parseFragment('''
   /* placehorder for unimplemented code libraries */
   var math = Math;
   var core = { int: { parse: Number }, print: e => console.log(e) };
-  var dom = { document: document };
 </script>''');
 final _log = new Logger('dev_compiler.src.codegen.html_codegen');