Add more missing closing namespace comments.

third_party/WebKit/Source/core/fetch/DocumentResource.h

 /*
     Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com>
     Copyright (C) 2011 Cosmin Truta <ctruta@gmail.com>
     Copyright (C) 2012 University of Szeged
     Copyright (C) 2012 Renata Hodovan <reni@webkit.org>
 
     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
     version 2 of the License, or (at your option) any later version.
@@ skipping 59 matching lines @@
 DEFINE_TYPE_CASTS(DocumentResource, Resource, resource, resource->type() == Resource::SVGDocument, resource.type() == Resource::SVGDocument); \
 inline DocumentResource* toDocumentResource(const ResourcePtr<Resource>& ptr) { return toDocumentResource(ptr.get()); }
 
 class DocumentResourceClient : public ResourceClient {
 public:
     ~DocumentResourceClient() override {}
     static ResourceClientType expectedType() { return DocumentType; }
     ResourceClientType resourceClientType() const override { return expectedType(); }
 };
 
-}
+} // namespace blink
 
 #endif // DocumentResource_h