Use C++11 range-based loop for core/xml and core/loader

Source/core/loader/CrossOriginPreflightResultCache.cpp

 /*
  * Copyright (C) 2008, 2009 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 104 matching lines @@
 {
     if (m_methods.contains(method) || FetchUtils::isSimpleMethod(method))
         return true;
 
     errorDescription = "Method " + method + " is not allowed by Access-Control-Allow-Methods.";
     return false;
 }
 
 bool CrossOriginPreflightResultCacheItem::allowsCrossOriginHeaders(const HTTPHeaderMap& requestHeaders, String& errorDescription) const
 {
-    HTTPHeaderMap::const_iterator end = requestHeaders.end();
-    for (HTTPHeaderMap::const_iterator it = requestHeaders.begin(); it != end; ++it) {
-        if (!m_headers.contains(it->key) && !FetchUtils::isSimpleHeader(it->key, it->value) && !FetchUtils::isForbiddenHeaderName(it->key)) {
-            errorDescription = "Request header field " + it->key.string() + " is not allowed by Access-Control-Allow-Headers.";
+    for (const auto& header : requestHeaders) {
+        if (!m_headers.contains(header.key) && !FetchUtils::isSimpleHeader(header.key, header.value) && !FetchUtils::isForbiddenHeaderName(header.key)) {
+            errorDescription = "Request header field " + header.key.string() + " is not allowed by Access-Control-Allow-Headers.";
             return false;
         }
     }
     return true;
 }
 
 bool CrossOriginPreflightResultCacheItem::allowsRequest(StoredCredentials includeCredentials, const String& method, const HTTPHeaderMap& requestHeaders) const
 {
     String ignoredExplanation;
     if (m_absoluteExpiryTime < currentTime())
@@ skipping 28 matching lines @@
         return false;
 
     if (cacheIt->value->allowsRequest(includeCredentials, method, requestHeaders))
         return true;
 
     m_preflightHashMap.remove(cacheIt);
     return false;
 }
 
 } // namespace blink