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

Source/platform/fonts/WidthCache.h

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 141 matching lines @@
 
 private:
     float* addSlowCase(const TextRun& run, float entry)
     {
         int length = run.length();
         bool isNewEntry;
         float *value;
         if (length == 1) {
             SingleCharMap::AddResult addResult = m_singleCharMap.add(run[0], entry);
             isNewEntry = addResult.isNewEntry;
-            value = &addResult.iterator->value;
+            value = &addResult.storedValue->value;
         } else {
             SmallStringKey smallStringKey;
             if (run.is8Bit())
                 smallStringKey = SmallStringKey(run.characters8(), length);
             else
                 smallStringKey = SmallStringKey(run.characters16(), length);
 
             Map::AddResult addResult = m_map.add(smallStringKey, entry);
             isNewEntry = addResult.isNewEntry;
-            value = &addResult.iterator->value;
+            value = &addResult.storedValue->value;
         }
 
         // Cache hit: ramp up by sampling the next few words.
         if (!isNewEntry) {
             m_interval = s_minInterval;
             return value;
         }
 
         // Cache miss: ramp down by increasing our sampling interval.
         if (m_interval < s_maxInterval)
@@ skipping 24 matching lines @@
 inline bool operator==(const WidthCache::SmallStringKey& a, const WidthCache::SmallStringKey& b)
 {
     if (a.length() != b.length())
         return false;
     return WTF::equal(a.characters(), b.characters(), a.length());
 }
 
 } // namespace WebCore
 
 #endif // WidthCache_h