Implement Function.apply in the new emitter.

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

Index: pkg/compiler/lib/src/js_backend/namer.dart
diff --git a/pkg/compiler/lib/src/js_backend/namer.dart b/pkg/compiler/lib/src/js_backend/namer.dart
index ac3965889516ed15b83070d2484dfeb40a729e9e..b802f95112650895ebd486625edaba24bfe39e28 100644
--- a/pkg/compiler/lib/src/js_backend/namer.dart
+++ b/pkg/compiler/lib/src/js_backend/namer.dart
@@ -233,6 +233,7 @@ class Namer implements ClosureNamer {
       r'$methodsWithOptionalArguments';
 
   final String classDescriptorProperty = r'^';
+  final String requiredParameterField = r'$requiredArgCount';
 
   // Name of property in a class description for the native dispatch metadata.
   final String nativeSpecProperty = '%';
@@ -307,6 +308,8 @@ class Namer implements ClosureNamer {
       case 'CALL_CATCH_ALL': return callCatchAllName;
       case 'REFLECTABLE': return reflectableField;
       case 'CLASS_DESCRIPTOR_PROPERTY': return classDescriptorProperty;
+      case 'REQUIRED_PARAMETER_PROPERTY': return requiredParameterField;
+      case 'DEFAULT_VALUES_PROPERTY': return defaultValuesField;
       default:
         compiler.reportError(
             node, MessageKind.GENERIC,