Re-implement %Generator% intrinsic as an object

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 3c957364fcbf92c8ed44637cf0209ece12968bd7..c0ca711cf22dd61ea8273cb2400f882e24115281 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -2059,10 +2059,18 @@ bool Genesis::InstallNatives() {
     Handle<JSObject> builtins(native_context()->builtins());
     Handle<JSObject> generator_object_prototype =
         factory()->NewJSObject(isolate()->object_function(), TENURED);
-    Handle<JSFunction> generator_function_prototype =
-        InstallFunction(builtins, "GeneratorFunctionPrototype",
-                        JS_FUNCTION_TYPE, JSFunction::kHeaderSize,
-                        generator_object_prototype, Builtins::kIllegal);
+    Handle<JSObject> generator_function_prototype =
+        factory()->NewJSObject(isolate()->object_function(), TENURED);
+    JSObject::AddProperty(builtins,
+      factory()->InternalizeUtf8String("GeneratorFunctionPrototype"),

[arv (Not doing code reviews), 2015/04/06 15:16:20]

Wrong indentation. `git cl upload` should have complained.

+      generator_function_prototype,
+      static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY));
+
+    JSObject::AddProperty(generator_function_prototype,
+          factory()->InternalizeUtf8String("prototype"),

[arv (Not doing code reviews), 2015/04/06 15:16:18]

wrong indentation

+          generator_object_prototype,
+          static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
+
     InstallFunction(builtins, "GeneratorFunction", JS_FUNCTION_TYPE,
                     JSFunction::kSize, generator_function_prototype,
                     Builtins::kIllegal);