Store non-standard HTTP headers in history. (WebKit side)

loader/FrameLoader.cpp

Index: loader/FrameLoader.cpp
===================================================================
--- loader/FrameLoader.cpp	(revision 48585)
+++ loader/FrameLoader.cpp	(working copy)
@@ -4658,6 +4658,13 @@
 
                 action = NavigationAction(itemOriginalURL, loadType, false);
             }
+
+            const HTTPHeaderMap& headerMap = item->httpHeaderFields();
+            if (headerMap.size() > 0) {
+                HTTPHeaderMap::const_iterator it = headerMap.begin();
+                for (; it != headerMap.end(); ++it)
+                    request.addHTTPHeaderField(it->first, it->second);
+            }
             
             if (!addedExtraFields)
                 addExtraFieldsToRequest(request, m_loadType, true, formData);