TODO in Dictionary resolved.

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 "v8.h"
 
 #include "accessors.h"
 #include "allocation-site-scopes.h"
 #include "api.h"
 #include "arguments.h"
@@ skipping 15758 matching lines @@
   int entry = dictionary->FindEntry(key);
 
   // If the entry is present set the value;
   if (entry != Dictionary::kNotFound) {
     dictionary->ValueAtPut(entry, *value);
     return dictionary;
   }
 
   // Check whether the dictionary should be extended.
   dictionary = EnsureCapacity(dictionary, 1, key);
-
-  Handle<Object> k = Shape::AsHandle(dictionary->GetIsolate(), key);
-  // TODO(ishell): Figure out if it is necessary to call AsHandle() here.
-  USE(k);
+#ifdef DEBUG
+  USE(Shape::AsHandle(dictionary->GetIsolate(), key));
+#endif
   PropertyDetails details = PropertyDetails(NONE, NORMAL, 0);
 
   AddEntry(dictionary, key, value, details, dictionary->Hash(key));
   return dictionary;
 }
 
 
 template<typename Derived, typename Shape, typename Key>
 Handle<Derived> Dictionary<Derived, Shape, Key>::Add(
     Handle<Derived> dictionary,
@@ skipping 1440 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal