dart2js: remove JS_OBJECT_CLASS_NAME and JS_NULL_CLASS_NAME from foreign

pkg/compiler/lib/src/ssa/builder.dart

 // Copyright (c) 2012, 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.
 
 part of ssa;
 
 class SsaFunctionCompiler implements FunctionCompiler {
   SsaCodeGeneratorTask generator;
   SsaBuilderTask builder;
   SsaOptimizerTask optimizer;
@@ skipping 4147 matching lines @@
     } else if (name == 'JS_CURRENT_ISOLATE_CONTEXT') {
       handleForeignJsCurrentIsolateContext(node);
     } else if (name == 'JS_CALL_IN_ISOLATE') {
       handleForeignJsCallInIsolate(node);
     } else if (name == 'DART_CLOSURE_TO_JS') {
       handleForeignDartClosureToJs(node, 'DART_CLOSURE_TO_JS');
     } else if (name == 'RAW_DART_FUNCTION_REF') {
       handleForeignRawFunctionRef(node, 'RAW_DART_FUNCTION_REF');
     } else if (name == 'JS_SET_CURRENT_ISOLATE') {
       handleForeignSetCurrentIsolate(node);
-    } else if (name == 'JS_OBJECT_CLASS_NAME') {
-      // TODO(floitsch): this should be a JS_NAME.
-      String name = backend.namer.runtimeTypeName(compiler.objectClass);
-      stack.add(addConstantString(name));
-    } else if (name == 'JS_NULL_CLASS_NAME') {
-      // TODO(floitsch): this should be a JS_NAME.
-      String name = backend.namer.runtimeTypeName(compiler.nullClass);
-      stack.add(addConstantString(name));
     } else if (name == 'JS_OPERATOR_AS_PREFIX') {
       // TODO(floitsch): this should be a JS_NAME.
       stack.add(addConstantString(backend.namer.operatorAsPrefix));
     } else if (name == 'JS_SIGNATURE_NAME') {
       // TODO(floitsch): this should be a JS_NAME.
       stack.add(addConstantString(backend.namer.operatorSignature));
     } else if (name == 'JS_TYPEDEF_TAG') {
       // TODO(floitsch): this should be a JS_NAME.
       stack.add(addConstantString(backend.namer.typedefTag));
     } else if (name == 'JS_FUNCTION_TYPE_VOID_RETURN_TAG') {
@@ skipping 3482 matching lines @@
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     JavaScriptBackend backend = builder.compiler.backend;
     ClassElement cls = backend.findHelper('DynamicRuntimeType');
     builder.push(new HDynamicType(type, new TypeMask.exact(cls, classWorld)));
   }
 }