Remove code that is unused after ContextMenu cleanup

Source/core/loader/EmptyClients.h

 /*
  * Copyright (C) 2006 Eric Seidel (eric@webkit.org)
  * Copyright (C) 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * Copyright (C) 2012 Samsung Electronics. 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
@@ skipping 229 matching lines @@
     virtual ResourceError cancelledError(const ResourceRequest&) OVERRIDE { ResourceError error("", 0, "", ""); error.setIsCancellation(true); return error; }
     virtual ResourceError cannotShowURLError(const ResourceRequest&) OVERRIDE { return ResourceError("", 0, "", ""); }
     virtual ResourceError interruptedForPolicyChangeError(const ResourceRequest&) OVERRIDE { return ResourceError("", 0, "", ""); }
 
     virtual ResourceError cannotShowMIMETypeError(const ResourceResponse&) OVERRIDE { return ResourceError("", 0, "", ""); }
     virtual ResourceError fileDoesNotExistError(const ResourceResponse&) OVERRIDE { return ResourceError("", 0, "", ""); }
     virtual ResourceError pluginWillHandleLoadError(const ResourceResponse&) OVERRIDE { return ResourceError("", 0, "", ""); }
 
     virtual bool shouldFallBack(const ResourceError&) OVERRIDE { return false; }
 
-    virtual bool canHandleRequest(const ResourceRequest&) const OVERRIDE { return false; }
     virtual bool canShowMIMEType(const String&) const OVERRIDE { return false; }
     virtual String generatedMIMETypeForURLScheme(const String&) const OVERRIDE { return ""; }
 
     virtual void didFinishLoad() OVERRIDE { }
 
     virtual PassRefPtr<DocumentLoader> createDocumentLoader(const ResourceRequest&, const SubstituteData&) OVERRIDE;
 
     virtual String userAgent(const KURL&) OVERRIDE { return ""; }
 
     virtual String doNotTrackValue() OVERRIDE { return String(); }
@@ skipping 145 matching lines @@
     virtual int forwardListCount() OVERRIDE { return 0; }
     virtual bool isActive() OVERRIDE { return false; }
     virtual void close() OVERRIDE { }
 };
 
 void fillWithEmptyClients(Page::PageClients&);
 
 }
 
 #endif // EmptyClients_h