Revert "Generate tear-off closures dynamically."

dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart

Index: dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart
index 53e32d8de8789e56ec417f7c048f3eb78ac0bd1e..86befd2da9ef2c986677c3d5a8fe9fcc469d8aa7 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/js_emitter/class_builder.dart
@@ -8,13 +8,9 @@ part of dart2js.js_emitter;
  * A data structure for collecting fragments of a class definition.
  */
 class ClassBuilder {
-  final List<jsAst.Property> properties = <jsAst.Property>[];
-  final List<String> fields = <String>[];
+  // TODO (sigurdm) this is just a bag of properties, rename this class
 
-  String superName;
-  String nativeName;
-  String functionType;
-  List<jsAst.Node> fieldMetadata;
+  final List<jsAst.Property> properties = <jsAst.Property>[];
 
   /// Set to true by user if class is indistinguishable from its superclass.
   bool isTrivial = false;
@@ -24,35 +20,8 @@ class ClassBuilder {
     properties.add(new jsAst.Property(js.string(name), value));
   }
 
-  void addField(String field) {
-    fields.add(field);
-  }
-
-  jsAst.ObjectInitializer toObjectInitializer() {
-    StringBuffer buffer = new StringBuffer();
-    if (superName != null) {
-      if (nativeName != null) {
-        buffer.write('$nativeName/');
-      }
-      buffer.write('$superName');
-      if (functionType != null) {
-        buffer.write(':$functionType');
-      }
-      buffer.write(';');
-    }
-    buffer.writeAll(fields, ',');
-    var classData = js.string('$buffer');
-    if (fieldMetadata != null) {
-      // If we need to store fieldMetadata, classData is turned into an array,
-      // and the field metadata is appended. So if classData is just a string,
-      // there is no field metadata.
-      classData =
-          new jsAst.ArrayInitializer.from([classData]..addAll(fieldMetadata));
-    }
-    var fieldsAndProperties =
-        [new jsAst.Property(js.string(''), classData)]
-        ..addAll(properties);
-    return new jsAst.ObjectInitializer(fieldsAndProperties, isOneLiner: false);
+  jsAst.Expression toObjectInitializer() {
+    return new jsAst.ObjectInitializer(properties, isOneLiner: false);
   }
 
 }