Make calls to AtomicString(const String&) explicit in loader/ and fetch/

Source/core/loader/FrameFetchContext.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 56 matching lines @@
             outgoingOrigin = document->outgoingOrigin();
         } else {
             outgoingReferrer = request.httpReferrer();
             outgoingOrigin = SecurityOrigin::createFromString(outgoingReferrer)->toString();
         }
 
         outgoingReferrer = SecurityPolicy::generateReferrerHeader(document->referrerPolicy(), request.url(), outgoingReferrer);
         if (outgoingReferrer.isEmpty())
             request.clearHTTPReferrer();
         else if (!request.httpReferrer())
-            request.setHTTPReferrer(outgoingReferrer);
+            request.setHTTPReferrer(AtomicString(outgoingReferrer));
 
-        FrameLoader::addHTTPOriginIfNeeded(request, outgoingOrigin);
+        FrameLoader::addHTTPOriginIfNeeded(request, AtomicString(outgoingOrigin));
     }
 
     if (isMainResource && m_frame->isMainFrame())
         request.setFirstPartyForCookies(request.url());
     else
         request.setFirstPartyForCookies(m_frame->tree().top()->document()->firstPartyForCookies());
 
     // The remaining modifications are only necessary for HTTP and HTTPS.
     if (!request.url().isEmpty() && !request.url().protocolIsInHTTPFamily())
         return;
@@ skipping 110 matching lines @@
     if (!response.isNull())
         dispatchDidReceiveResponse(ensureLoader(loader), identifier, response);
 
     if (dataLength > 0)
         dispatchDidReceiveData(ensureLoader(loader), identifier, 0, dataLength, 0);
 
     dispatchDidFinishLoading(ensureLoader(loader), identifier, 0);
 }
 
 } // namespace WebCore