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

pkg/compiler/lib/src/universe/codegen_world_builder.dart

Index: pkg/compiler/lib/src/universe/codegen_world_builder.dart
diff --git a/pkg/compiler/lib/src/universe/codegen_world_builder.dart b/pkg/compiler/lib/src/universe/codegen_world_builder.dart
index e1bead987d39f40bc0290bfc7e8529cd1622719c..409624961d863a400324b2f93936a657a3a90bd9 100644
--- a/pkg/compiler/lib/src/universe/codegen_world_builder.dart
+++ b/pkg/compiler/lib/src/universe/codegen_world_builder.dart
@@ -14,9 +14,9 @@ abstract class CodegenWorldBuilder implements WorldBuilder {
       ClassEntity cls, void f(ClassEntity declarer, FieldEntity field));
 
   /// Calls [f] for each parameter of [function] providing the type and name of
-  /// the parameter and the [defaultValue] if the parameter is optional.
-  void forEachParameter(FunctionEntity function,
-      void f(DartType type, String name, ConstantValue defaultValue));
+  /// the parameter.
+  void forEachParameter(
+      FunctionEntity function, void f(DartType type, String name));
 
   void forEachInvokedName(
       f(String name, Map<Selector, SelectorConstraints> selectors));
@@ -27,12 +27,6 @@ abstract class CodegenWorldBuilder implements WorldBuilder {
   void forEachInvokedSetter(
       f(String name, Map<Selector, SelectorConstraints> selectors));
 
-  /// Returns `true` if [field] has a constant initializer.
-  bool hasConstantFieldInitializer(FieldEntity field);
-
-  /// Returns the constant initializer for [field].
-  ConstantValue getConstantFieldInitializer(FieldEntity field);
-
   /// Returns `true` if [member] is invoked as a setter.
   bool hasInvokedSetter(MemberEntity member, ClosedWorld world);
 
@@ -548,10 +542,7 @@ abstract class CodegenWorldBuilderImpl implements CodegenWorldBuilder {
 }
 
 class ElementCodegenWorldBuilderImpl extends CodegenWorldBuilderImpl {
-  final JavaScriptConstantCompiler _constants;
-
   ElementCodegenWorldBuilderImpl(
-      this._constants,
       ElementEnvironment elementEnvironment,
       NativeBasicData nativeBasicData,
       ClosedWorld world,
@@ -559,18 +550,6 @@ class ElementCodegenWorldBuilderImpl extends CodegenWorldBuilderImpl {
       : super(elementEnvironment, nativeBasicData, world,
             selectorConstraintsStrategy);
 
-  @override
-  bool hasConstantFieldInitializer(FieldElement field) {
-    return field.constant != null;
-  }
-
-  @override
-  ConstantValue getConstantFieldInitializer(FieldElement field) {
-    assert(field.constant != null,
-        failedAt(field, "Field $field doesn't have a constant initial value."));
-    return _constants.getConstantValue(field.constant);
-  }
-
   /// Calls [f] with every instance field, together with its declarer, in an
   /// instance of [cls].
   void forEachInstanceField(
@@ -580,18 +559,12 @@ class ElementCodegenWorldBuilderImpl extends CodegenWorldBuilderImpl {
   }
 
   @override
-  void forEachParameter(MethodElement function,
-      void f(DartType type, String name, ConstantValue defaultValue)) {
+  void forEachParameter(
+      MethodElement function, void f(DartType type, String name)) {
     FunctionSignature parameters = function.functionSignature;
     parameters.forEachParameter((_parameter) {
       ParameterElement parameter = _parameter;
-      ConstantValue value;
-      if (parameter.constant != null) {
-        value = _constants.getConstantValue(parameter.constant);
-      } else {
-        value = new NullConstantValue();
-      }
-      f(parameter.type, parameter.name, value);
+      f(parameter.type, parameter.name);
     });
   }
 
@@ -627,10 +600,7 @@ class ElementCodegenWorldBuilderImpl extends CodegenWorldBuilderImpl {
 }
 
 class KernelCodegenWorldBuilder extends CodegenWorldBuilderImpl {
-  KernelToElementMapImpl _elementMap;
-
   KernelCodegenWorldBuilder(
-      this._elementMap,
       ElementEnvironment elementEnvironment,
       NativeBasicData nativeBasicData,
       ClosedWorld world,
@@ -639,19 +609,9 @@ class KernelCodegenWorldBuilder extends CodegenWorldBuilderImpl {
             selectorConstraintsStrategy);
 
   @override
-  bool hasConstantFieldInitializer(FieldEntity field) {
-    return _elementMap.hasConstantFieldInitializer(field);
-  }
-
-  @override
-  ConstantValue getConstantFieldInitializer(FieldEntity field) {
-    return _elementMap.getConstantFieldInitializer(field);
-  }
-
-  @override
-  void forEachParameter(FunctionEntity function,
-      void f(DartType type, String name, ConstantValue defaultValue)) {
-    _elementMap.forEachParameter(function, f);
+  void forEachParameter(
+      FunctionEntity function, void f(DartType type, String name)) {
+    throw new UnimplementedError('KernelCodegenWorldBuilder.forEachParameter');
   }
 
   @override