dart2js: Address comments from CL 871073002.

pkg/compiler/lib/src/js_emitter/program_builder.dart

 // Copyright (c) 2014, 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.
 
 library dart2js.js_emitter.program_builder;
 
 import 'js_emitter.dart' show computeMixinClass;
 import 'model.dart';
 
 import '../common.dart';
@@ skipping 260 matching lines @@
             !cls.isNative || !_unneededNativeClasses.contains(cls))
         .toList(growable: false);
 
     bool visitStatics = true;
     List<Field> staticFieldsForReflection = _buildFields(library, visitStatics);
 
     return new Library(library, uri, statics, classes,
                        staticFieldsForReflection);
   }
 
-  /// HACK for Try.
+  /// HACK for Incremental Compilation.
   ///
   /// Returns a class that contains the fields of a class.
-  Class buildClassWithFieldsForTry(ClassElement element) {
-    bool onlyForRti = _task.typeTestRegistry.rtiNeededClasses.contains(element);
+  Class buildClassWithFieldsForIncrementalCompilation(ClassElement element) {
+    assert(_compiler.hasIncrementalSupport);
 
-    List<Field> instanceFields =
-        onlyForRti ? const <Field>[] : _buildFields(element, false);
+    List<Field> instanceFields = _buildFields(element, false);
 
     String name = namer.getNameOfClass(element);
-    String holderName = namer.globalObjectFor(element);
-    Holder holder = _registry.registerHolder(holderName);
-    bool isInstantiated =
-        _compiler.codegenWorld.directlyInstantiatedClasses.contains(element);
 
     return new Class(
-        element, name, holder, [], instanceFields, [], [], [], null,
-        isDirectlyInstantiated: isInstantiated,
-        onlyForRti: onlyForRti,
+        element, name, null, [], instanceFields, [], [], [], null,
+        isDirectlyInstantiated: true,
+        onlyForRti: false,
         isNative: element.isNative);
   }
 
   Class _buildClass(ClassElement element) {
     bool onlyForRti = _task.typeTestRegistry.rtiNeededClasses.contains(element);
 
     List<Method> methods = [];
     List<StubMethod> callStubs = <StubMethod>[];
 
     void visitMember(ClassElement enclosing, Element member) {
@@ skipping 208 matching lines @@
       _registry.registerConstant(outputUnit, constantValue);
       assert(!_constants.containsKey(constantValue));
       String name = namer.constantName(constantValue);
       String constantObject = namer.globalObjectForConstant(constantValue);
       Holder holder = _registry.registerHolder(constantObject);
       Constant constant = new Constant(name, holder, constantValue);
       _constants[constantValue] = constant;
     }
   }
 }