Make JSFunction::BodyDescriptor the only single place that knows how to iterate JSFunction's body.

src/objects.cc

 // Copyright 2013 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 10942 matching lines @@
 
 bool Map::EquivalentToForNormalization(Map* other,
                                        PropertyNormalizationMode mode) {
   int properties =
       mode == CLEAR_INOBJECT_PROPERTIES ? 0 : other->GetInObjectProperties();
   return CheckEquivalent(this, other) && bit_field2() == other->bit_field2() &&
          GetInObjectProperties() == properties;
 }
 
 
-void JSFunction::JSFunctionIterateBody(int object_size, ObjectVisitor* v) {
-  // Iterate over all fields in the body but take care in dealing with
-  // the code entry.
-  IteratePointers(v, kPropertiesOffset, kCodeEntryOffset);
-  v->VisitCodeEntry(this->address() + kCodeEntryOffset);
-  IteratePointers(v, kCodeEntryOffset + kPointerSize, object_size);
-}
-
-
 bool JSFunction::Inlines(SharedFunctionInfo* candidate) {
   DisallowHeapAllocation no_gc;
   if (shared() == candidate) return true;
   if (code()->kind() != Code::OPTIMIZED_FUNCTION) return false;
   DeoptimizationInputData* const data =
       DeoptimizationInputData::cast(code()->deoptimization_data());
   if (data->length() == 0) return false;
   FixedArray* const literals = data->LiteralArray();
   int const inlined_count = data->InlinedFunctionCount()->value();
   for (int i = 0; i < inlined_count; ++i) {
@@ skipping 6898 matching lines @@
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 
 }  // namespace internal
 }  // namespace v8