[proxies] Make Object.{isFrozen,isSealed} behave correctly for proxies.

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 "src/allocation.h"
 #include "src/objects.h"
 #include "src/unicode.h"
@@ skipping 416 matching lines @@
 #define FOR_EACH_INTRINSIC_OBJECT(F)                 \
   F(GetPrototype, 1, 1)                              \
   F(InternalSetPrototype, 2, 1)                      \
   F(SetPrototype, 2, 1)                              \
   F(GetOwnProperty, 2, 1)                            \
   F(GetOwnProperty_Legacy, 2, 1)                     \
   F(PreventExtensions, 1, 1)                         \
   F(IsExtensible, 1, 1)                              \
   F(OptimizeObjectForAddingMultipleProperties, 2, 1) \
   F(ObjectFreeze, 1, 1)                              \
+  F(ObjectIsFrozen, 1, 1)                            \
   F(ObjectSeal, 1, 1)                                \
+  F(ObjectIsSealed, 1, 1)                            \
   F(GetProperty, 2, 1)                               \
   F(GetPropertyStrong, 2, 1)                         \
   F(KeyedGetProperty, 2, 1)                          \
   F(KeyedGetPropertyStrong, 2, 1)                    \
   F(LoadGlobalViaContext, 1, 1)                      \
   F(StoreGlobalViaContext_Sloppy, 2, 1)              \
   F(StoreGlobalViaContext_Strict, 2, 1)              \
   F(AddNamedProperty, 4, 1)                          \
   F(SetProperty, 4, 1)                               \
   F(AddElement, 3, 1)                                \
@@ skipping 800 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_