Preprocess structured stack trace on GC to get rid of code reference.

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 <iomanip>
 #include <sstream>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 8329 matching lines @@
   set_last_used_index(0);
 }
 
 
 bool WeakFixedArray::Remove(Handle<HeapObject> value) {
   if (Length() == 0) return false;
   // Optimize for the most recently added element to be removed again.
   int first_index = last_used_index();
   for (int i = first_index;;) {
     if (Get(i) == *value) {
-      clear(i);
+      Clear(i);
       // Users of WeakFixedArray should make sure that there are no duplicates,
       // they can use Add(..., kAddIfNotFound) if necessary.
       return true;
     }
     i = (i + 1) % Length();
     if (i == first_index) return false;
   }
   UNREACHABLE();
 }
 
@@ skipping 8840 matching lines @@
 void PropertyCell::SetValueWithInvalidation(Handle<PropertyCell> cell,
                                             Handle<Object> new_value) {
   if (cell->value() != *new_value) {
     cell->set_value(*new_value);
     Isolate* isolate = cell->GetIsolate();
     cell->dependent_code()->DeoptimizeDependentCodeGroup(
         isolate, DependentCode::kPropertyCellChangedGroup);
   }
 }
 } }  // namespace v8::internal