Teach OrderedHashSet::Remove to report whether it actually removed anything

src/objects.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_H_
 #define V8_OBJECTS_H_
 
 #include "allocation.h"
 #include "assert-scope.h"
 #include "builtins.h"
@@ skipping 4305 matching lines @@
  public:
   static OrderedHashSet* cast(Object* obj) {
     ASSERT(obj->IsOrderedHashTable());
     return reinterpret_cast<OrderedHashSet*>(obj);
   }
 
   bool Contains(Handle<Object> key);
   static Handle<OrderedHashSet> Add(
       Handle<OrderedHashSet> table, Handle<Object> key);
   static Handle<OrderedHashSet> Remove(
-      Handle<OrderedHashSet> table, Handle<Object> key);
+      Handle<OrderedHashSet> table, Handle<Object> key, bool* was_present);
 };
 
 
 class JSMapIterator;
 
 
 class OrderedHashMap:public OrderedHashTable<
     OrderedHashMap, JSMapIterator, 2> {
  public:
   static OrderedHashMap* cast(Object* obj) {
@@ skipping 6779 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_