Lock the prototype of internal classes.

src/runtime.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 61 matching lines @@
   F(SetHiddenPrototype, 2, 1) \
   \
   F(IsConstructCall, 0, 1) \
   \
   F(GetOwnProperty, 2, 1) \
   \
   F(IsExtensible, 1, 1) \
   F(PreventExtensions, 1, 1)\
   \
   /* Utilities */ \
+  F(CheckIsBootstrapping, 0, 1) \
   F(GetFunctionDelegate, 1, 1) \
   F(GetConstructorDelegate, 1, 1) \
   F(NewArgumentsFast, 3, 1) \
   F(NewStrictArgumentsFast, 3, 1) \
   F(LazyCompile, 1, 1) \
   F(LazyRecompile, 1, 1) \
   F(NotifyDeoptimized, 1, 1) \
   F(NotifyOSR, 0, 1) \
   F(DeoptimizeFunction, 1, 1) \
   F(RunningInSimulator, 0, 1) \
@@ skipping 577 matching lines @@
 
 enum kDeclareGlobalsFlags {
   kDeclareGlobalsEvalFlag = 1 << 0,
   kDeclareGlobalsStrictModeFlag = 1 << 1,
   kDeclareGlobalsNativeFlag = 1 << 2
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_