Refactor determineRequestContext() to remove a mutableResourceRequest() call

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
     rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 113 matching lines @@
   bool isControlledByServiceWorker() const;
 
   enum ResourceLoadStartType {
     ResourceLoadingFromNetwork,
     ResourceLoadingFromCache
   };
   static const ResourceLoaderOptions& defaultResourceOptions();
 
   String getCacheIdentifier() const;
 
-  static void determineRequestContext(ResourceRequest&,
-                                      Resource::Type,
-                                      bool isMainFrame);
-  void determineRequestContext(ResourceRequest&, Resource::Type);
+  WARN_UNUSED_RESULT static WebURLRequest::RequestContext
+  determineRequestContext(Resource::Type, bool isMainFrame);
+  WARN_UNUSED_RESULT WebURLRequest::RequestContext determineRequestContext(
+      Resource::Type) const;
 
   void updateAllImageResourcePriorities();
 
   void reloadLoFiImages();
 
   // Calling this method before main document resource is fetched is invalid.
   ResourceTimingInfo* getNavigationTimingInfo();
 
   // This is only exposed for testing purposes.
   HeapListHashSet<Member<Resource>>* preloads() { return m_preloads.get(); }
@@ skipping 135 matching lines @@
   }
 
  private:
   Member<ResourceFetcher> m_loader;
   bool m_previousState;
 };
 
 }  // namespace blink
 
 #endif  // ResourceFetcher_h