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

Source/core/loader/DocumentThreadableLoader.cpp

Index: Source/core/loader/DocumentThreadableLoader.cpp
diff --git a/Source/core/loader/DocumentThreadableLoader.cpp b/Source/core/loader/DocumentThreadableLoader.cpp
index bc44a3ce3617ee05321f13bbf9a8341cb9118c68..b0b129dbf9adc3698ec82b8a30c2e255f059bb49 100644
--- a/Source/core/loader/DocumentThreadableLoader.cpp
+++ b/Source/core/loader/DocumentThreadableLoader.cpp
@@ -99,10 +99,9 @@ DocumentThreadableLoader::DocumentThreadableLoader(Document& document, Threadabl
     // Save any CORS simple headers on the request here. If this request redirects cross-origin, we cancel the old request
     // create a new one, and copy these headers.
     const HTTPHeaderMap& headerMap = request.httpHeaderFields();
-    HTTPHeaderMap::const_iterator end = headerMap.end();
-    for (HTTPHeaderMap::const_iterator it = headerMap.begin(); it != end; ++it) {
-        if (FetchUtils::isSimpleHeader(it->key, it->value))
-            m_simpleRequestHeaders.add(it->key, it->value);
+    for (const auto& header : headerMap) {
+        if (FetchUtils::isSimpleHeader(header.key, header.value))
+            m_simpleRequestHeaders.add(header.key, header.value);
     }
 
     // If the fetch request will be handled by the ServiceWorker, the
@@ -329,9 +328,8 @@ void DocumentThreadableLoader::redirectReceived(Resource* resource, ResourceRequ
             request.clearHTTPOrigin();
             request.clearHTTPUserAgent();
             // Add any CORS simple request headers which we previously saved from the original request.
-            HTTPHeaderMap::const_iterator end = m_simpleRequestHeaders.end();
-            for (HTTPHeaderMap::const_iterator it = m_simpleRequestHeaders.begin(); it != end; ++it) {
-                request.setHTTPHeaderField(it->key, it->value);
+            for (const auto& header : m_simpleRequestHeaders) {

[Nate Chapin, 2015/01/05 21:41:04]

Nit: no {} for single-line for() bodies.

[zhaoze.zhou, 2015/01/08 03:18:19]

Done.

+                request.setHTTPHeaderField(header.key, header.value);
             }
             makeCrossOriginAccessRequest(request);
             return;