(Concept patch) Simplify WTF::HashTable::add() return value for size and performance

Source/core/inspector/InspectorDOMAgent.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 1007 matching lines @@
             if (exceptionState.hadException() || !nodeList)
                 continue;
 
             unsigned size = nodeList->length();
             for (unsigned i = 0; i < size; ++i)
                 resultCollector.add(nodeList->item(i));
         }
     }
 
     *searchId = IdentifiersFactory::createIdentifier();
-    SearchResults::iterator resultsIt = m_searchResults.add(*searchId, Vector<RefPtr<Node> >()).iterator;
+    Vector<RefPtr<Node> >* resultsIt = &m_searchResults.add(*searchId, Vector<RefPtr<Node> >()).iterator->value;
 
     for (ListHashSet<Node*>::iterator it = resultCollector.begin(); it != resultCollector.end(); ++it)
-        resultsIt->value.append(*it);
+        resultsIt->append(*it);
 
-    *resultCount = resultsIt->value.size();
+    *resultCount = resultsIt->size();
 }
 
 void InspectorDOMAgent::getSearchResults(ErrorString* errorString, const String& searchId, int fromIndex, int toIndex, RefPtr<TypeBuilder::Array<int> >& nodeIds)
 {
     SearchResults::iterator it = m_searchResults.find(searchId);
     if (it == m_searchResults.end()) {
         *errorString = "No search session with given id found";
         return;
     }
 
@@ skipping 980 matching lines @@
     if (!m_documentNodeToIdMap.contains(m_document)) {
         RefPtr<TypeBuilder::DOM::Node> root;
         getDocument(errorString, root);
         return errorString->isEmpty();
     }
     return true;
 }
 
 } // namespace WebCore