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

Source/platform/network/ResourceRequest.cpp

 /*
  * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2009, 2012 Google 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
@@ skipping 222 matching lines @@
 
 void ResourceRequest::setPriority(ResourceLoadPriority priority)
 {
     m_priority = priority;
 }
 
 void ResourceRequest::addHTTPHeaderField(const AtomicString& name, const AtomicString& value)
 {
     HTTPHeaderMap::AddResult result = m_httpHeaderFields.add(name, value);
     if (!result.isNewEntry)
-        result.iterator->value = result.iterator->value + ',' + value;
+        result.storedValue->value = result.storedValue->value + ',' + value;
 }
 
 void ResourceRequest::addHTTPHeaderFields(const HTTPHeaderMap& headerFields)
 {
     HTTPHeaderMap::const_iterator end = headerFields.end();
     for (HTTPHeaderMap::const_iterator it = headerFields.begin(); it != end; ++it)
         addHTTPHeaderField(it->key, it->value);
 }
 
 void ResourceRequest::clearHTTPHeaderField(const AtomicString& name)
@@ skipping 95 matching lines @@
 // This is used by the loader to control the number of issued parallel load requests.
 unsigned initializeMaximumHTTPConnectionCountPerHost()
 {
     // The chromium network stack already handles limiting the number of
     // parallel requests per host, so there's no need to do it here.  Therefore,
     // this is set to a high value that should never be hit in practice.
     return 10000;
 }
 
 }