Revert of Create JSPromise

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 47d7eb83ba393c90257bce7755e19dcbd2bca278..98f709c4f4b8987013d74a08c51528a7701e38d2 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1795,9 +1795,9 @@
 
     Handle<JSObject> prototype =
         factory->NewJSObject(isolate->object_function(), TENURED);
-    Handle<JSFunction> promise_fun =
-        InstallFunction(global, "Promise", JS_PROMISE_TYPE, JSPromise::kSize,
-                        prototype, Builtins::kPromiseConstructor);
+    Handle<JSFunction> promise_fun = InstallFunction(
+        global, "Promise", JS_PROMISE_TYPE, JSObject::kHeaderSize, prototype,
+        Builtins::kPromiseConstructor);
     InstallWithIntrinsicDefaultProto(isolate, promise_fun,
                                      Context::PROMISE_FUNCTION_INDEX);
 
@@ -1815,9 +1815,6 @@
     JSObject::AddProperty(
         prototype, factory->to_string_tag_symbol(), factory->Promise_string(),
         static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY));
-
-    SimpleInstallFunction(prototype, "then", Builtins::kPromiseThen, 2, true,
-                          DONT_ENUM);
 
     {  // Internal: PromiseInternalConstructor
       Handle<JSFunction> function =
@@ -1827,27 +1824,11 @@
           isolate, function, Context::PROMISE_INTERNAL_CONSTRUCTOR_INDEX);
     }
 
-    {  // Internal: PromiseCreateAndSet
-      Handle<JSFunction> function =
-          SimpleCreateFunction(isolate, factory->empty_string(),
-                               Builtins::kPromiseCreateAndSet, 2, false);
-      InstallWithIntrinsicDefaultProto(isolate, function,
-                                       Context::PROMISE_CREATE_AND_SET_INDEX);
-    }
-
     {  // Internal: IsPromise
       Handle<JSFunction> function = SimpleCreateFunction(
           isolate, factory->empty_string(), Builtins::kIsPromise, 1, false);
       InstallWithIntrinsicDefaultProto(isolate, function,
                                        Context::IS_PROMISE_INDEX);
-    }
-
-    {  // Internal: PerformPromiseThen
-      Handle<JSFunction> function =
-          SimpleCreateFunction(isolate, factory->empty_string(),
-                               Builtins::kPerformPromiseThen, 4, false);
-      InstallWithIntrinsicDefaultProto(isolate, function,
-                                       Context::PERFORM_PROMISE_THEN_INDEX);
     }
 
     {