Remove JSBuiltinsObject.

src/heap/objects-visiting-inl.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_OBJECTS_VISITING_INL_H_
 #define V8_OBJECTS_VISITING_INL_H_
 
 #include "src/heap/array-buffer-tracker.h"
 #include "src/heap/objects-visiting.h"
 #include "src/ic/ic-state.h"
@@ skipping 649 matching lines @@
       DeoptimizationInputData::cast(code->deoptimization_data());
   FixedArray* const literals = data->LiteralArray();
   int const inlined_count = data->InlinedFunctionCount()->value();
   for (int i = 0; i < inlined_count; ++i) {
     StaticVisitor::MarkObject(
         heap, SharedFunctionInfo::cast(literals->get(i))->code());
   }
 }
 
 
-inline static bool IsValidNonBuiltinContext(Object* context) {
-  return context->IsContext() &&
-         !Context::cast(context)->global_object()->IsJSBuiltinsObject();
+inline static bool HasValidNonBuiltinContext(JSFunction* function) {
+  return function->context()->IsContext() && !function->IsBuiltin();
 }
 
 
 inline static bool HasSourceCode(Heap* heap, SharedFunctionInfo* info) {
   Object* undefined = heap->undefined_value();
   return (info->script() != undefined) &&
          (reinterpret_cast<Script*>(info->script())->source() != undefined);
 }
 
 
 template <typename StaticVisitor>
 bool StaticMarkingVisitor<StaticVisitor>::IsFlushable(Heap* heap,
                                                       JSFunction* function) {
   SharedFunctionInfo* shared_info = function->shared();
 
   // Code is either on stack, in compilation cache or referenced
   // by optimized version of function.
   MarkBit code_mark = Marking::MarkBitFrom(function->code());
   if (Marking::IsBlackOrGrey(code_mark)) {
     return false;
   }
 
   // The function must have a valid context and not be a builtin.
-  if (!IsValidNonBuiltinContext(function->context())) {
+  if (!HasValidNonBuiltinContext(function)) {
     return false;
   }
 
   // We do not (yet) flush code for optimized functions.
   if (function->code() != shared_info->code()) {
     return false;
   }
 
   // Check age of optimized code.
   if (FLAG_age_code && !function->code()->IsOld()) {
@@ skipping 192 matching lines @@
 
   RelocIterator it(this, mode_mask);
   for (; !it.done(); it.next()) {
     it.rinfo()->template Visit<StaticVisitor>(heap);
   }
 }
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_OBJECTS_VISITING_INL_H_