dart2js: emit callstubs in new emitter and rename to stubs.

pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart

Index: pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
diff --git a/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart b/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
index 216b7d0d0a110430415e5217cd1067323409fcc3..a00202439e4bd4d28727d469e5ae2567ee0c3d8d 100644
--- a/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
+++ b/pkg/compiler/lib/src/js_emitter/old_emitter/class_emitter.dart
@@ -214,7 +214,7 @@ class ClassEmitter extends CodeEmitterHelper {
   }
 
   void emitCallStubs(Class cls, ClassBuilder builder) {
-    for (Method method in cls.callStubs) {
+    for (Method method in cls.stubs) {
       jsAst.Property property = builder.addProperty(method.name, method.code);
       compiler.dumpInfoTask.registerElementAst(method.element, property);
     }