[builtins] Migrate Object.keys to CodeStubAssembler builtin.

src/runtime/runtime.h

 // Copyright 2012 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.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 359 matching lines @@
   F(NumberToSmi, 1, 1)                 \
   F(SmiLexicographicCompare, 2, 1)     \
   F(MaxSmi, 0, 1)                      \
   F(IsSmi, 1, 1)                       \
   F(GetHoleNaNUpper, 0, 1)             \
   F(GetHoleNaNLower, 0, 1)
 
 #define FOR_EACH_INTRINSIC_OBJECT(F)                            \
   F(AddDictionaryProperty, 3, 1)                                \
   F(GetPrototype, 1, 1)                                         \
+  F(ObjectKeys, 1, 1)                                           \
   F(ObjectHasOwnProperty, 2, 1)                                 \
   F(ObjectCreate, 2, 1)                                         \
   F(InternalSetPrototype, 2, 1)                                 \
   F(OptimizeObjectForAddingMultipleProperties, 2, 1)            \
   F(GetProperty, 2, 1)                                          \
   F(KeyedGetProperty, 2, 1)                                     \
   F(AddNamedProperty, 4, 1)                                     \
   F(SetProperty, 4, 1)                                          \
   F(AddElement, 3, 1)                                           \
   F(AppendElement, 2, 1)                                        \
@@ skipping 456 matching lines @@
   kMaybeDeopted = 1 << 3,
   kOptimized = 1 << 4,
   kTurboFanned = 1 << 5,
   kInterpreted = 1 << 6,
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_