Remove unused deprecation message of the service worker redirected response restriction.

third_party/WebKit/Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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.
@@ skipping 440 matching lines @@
     if (!writer_)
       CommitData(0, 0);
   }
 
   if (!frame_)
     return;
 
   application_cache_host_->FinishedLoadingMainResource();
   EndWriting();
   ClearMainResourceHandle();
-
-  // Shows the deprecation message and measures the impact of the new security
-  // restriction which disallows responding to navigation requests with
-  // redirected responses in the service worker.
-  // TODO(horo): Remove this when we actually introduce the restriction in
-  // RespondWithObserver.
-  if (response_.WasFetchedViaServiceWorker() &&
-      response_.UrlListViaServiceWorker().size() > 1) {
-    Deprecation::CountDeprecation(
-        frame_,
-        UseCounter::
-            kServiceWorkerRespondToNavigationRequestWithRedirectedResponse);
-  }
 }
 
 bool DocumentLoader::RedirectReceived(
     Resource* resource,
     const ResourceRequest& request,
     const ResourceResponse& redirect_response) {
   DCHECK(frame_);
   DCHECK_EQ(resource, main_resource_);
   DCHECK(!redirect_response.IsNull());
   request_ = request;
@@ skipping 630 matching lines @@
                      InstallNewDocumentReason::kJavascriptURL,
                      kForceSynchronousParsing, KURL());
   if (!source.IsNull())
     writer_->AppendReplacingData(source);
   EndWriting();
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 }  // namespace blink