[builtins] Migrate Object.keys to C++.

src/bootstrapper.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
@@ skipping 1087 matching lines @@
     Handle<JSFunction> object_is_extensible =
         SimpleInstallFunction(object_function, "isExtensible",
                               Builtins::kObjectIsExtensible, 1, false);
     native_context()->set_object_is_extensible(*object_is_extensible);
     Handle<JSFunction> object_is_frozen = SimpleInstallFunction(
         object_function, "isFrozen", Builtins::kObjectIsFrozen, 1, false);
     native_context()->set_object_is_frozen(*object_is_frozen);
     Handle<JSFunction> object_is_sealed = SimpleInstallFunction(
         object_function, "isSealed", Builtins::kObjectIsSealed, 1, false);
     native_context()->set_object_is_sealed(*object_is_sealed);
+    Handle<JSFunction> object_keys = SimpleInstallFunction(
+        object_function, "keys", Builtins::kObjectKeys, 1, false);
+    native_context()->set_object_keys(*object_keys);
     SimpleInstallFunction(object_function, "preventExtensions",
                           Builtins::kObjectPreventExtensions, 1, false);
     SimpleInstallFunction(object_function, "seal", Builtins::kObjectSeal, 1,
                           false);
   }
 
   Handle<JSObject> global(native_context()->global_object());
 
   {  // --- F u n c t i o n ---
     Handle<JSFunction> function_function =
@@ skipping 2314 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8