Revert "Towards compiling Hello World!" and "Compile and run Hello World!"

pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart

Index: pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart
diff --git a/pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart b/pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart
index 284146755742d255563266ccbac642cedc7e08db..953a30c5ea31e9a0f9067c6057df26a90226b2c5 100644
--- a/pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart
+++ b/pkg/compiler/lib/src/js_backend/constant_handler_javascript.dart
@@ -8,7 +8,6 @@ import '../constants/constant_system.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart';
 import '../elements/elements.dart';
-import '../elements/entities.dart';
 import '../elements/visitor.dart' show BaseElementVisitor;
 import '../resolution/tree_elements.dart' show TreeElements;
 import '../tree/tree.dart';
@@ -116,7 +115,7 @@ class JavaScriptConstantCompiler extends ConstantCompilerBase
     implements BackendConstantEnvironment {
   // TODO(johnniwinther): Move this to the backend constant handler.
   /** Caches the statics where the initial value cannot be eagerly compiled. */
-  final Set<FieldEntity> lazyStatics = new Set<FieldEntity>();
+  final Set<FieldElement> lazyStatics = new Set<FieldElement>();
 
   // Constants computed for constant expressions.
   final Map<Node, ConstantExpression> nodeConstantMap =
@@ -141,19 +140,18 @@ class JavaScriptConstantCompiler extends ConstantCompilerBase
         element, definitions,
         isConst: isConst, checkType: checkType);
     if (!isConst && value == null) {
-      FieldElement field = element;
-      registerLazyStatic(field);
+      registerLazyStatic(element);
     }
     return value;
   }
 
   @override
-  void registerLazyStatic(FieldEntity element) {
+  void registerLazyStatic(FieldElement element) {
     lazyStatics.add(element);
   }
 
-  List<FieldEntity> getLazilyInitializedFieldsForEmission() {
-    return new List<FieldEntity>.from(lazyStatics);
+  List<FieldElement> getLazilyInitializedFieldsForEmission() {
+    return new List<FieldElement>.from(lazyStatics);
   }
 
   ConstantExpression compileNode(Node node, TreeElements elements,