Simpler return value of HashTable::add/HashMap:add and others

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 922 matching lines @@
         return false;
 
     size_t currentNamedGridLine = 0;
     for (CSSValueListIterator i = value; i.hasMore(); i.advance()) {
         CSSValue* currValue = i.value();
         if (currValue->isGridLineNamesValue()) {
             CSSGridLineNamesValue* lineNamesValue = toCSSGridLineNamesValue(currValue);
             for (CSSValueListIterator j = lineNamesValue; j.hasMore(); j.advance()) {
                 String namedGridLine = toCSSPrimitiveValue(j.value())->getStringValue();
                 NamedGridLinesMap::AddResult result = namedGridLines.add(namedGridLine, Vector<size_t>());
-                result.iterator->value.append(currentNamedGridLine);
+                result.storedValue->value.append(currentNamedGridLine);
                 OrderedNamedGridLines::AddResult orderedInsertionResult = orderedNamedGridLines.add(currentNamedGridLine, Vector<String>());
-                orderedInsertionResult.iterator->value.append(namedGridLine);
+                orderedInsertionResult.storedValue->value.append(namedGridLine);
             }
             continue;
         }
 
         ++currentNamedGridLine;
         trackSizes.append(createGridTrackSize(currValue, state));
     }
 
     // The parser should have rejected any <track-list> without any <track-size> as
     // this is not conformant to the syntax.
@@ skipping 1183 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore