Remove outdated comment about CSP for <track>

Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@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 489 matching lines @@
         if (!shouldBypassMainWorldContentSecurityPolicy && !m_document->contentSecurityPolicy()->allowFontFromSource(url))
             return false;
         break;
     }
     case Resource::MainResource:
     case Resource::Raw:
     case Resource::LinkPrefetch:
     case Resource::LinkSubresource:
         break;
     case Resource::TextTrack:
-        // Cues aren't called out in the CSP spec yet, but they only work with a media element
-        // so use the media policy.
         if (!shouldBypassMainWorldContentSecurityPolicy && !m_document->contentSecurityPolicy()->allowMediaFromSource(url))
             return false;
         break;
     }
 
     // Last of all, check for insecure content. We do this last so that when
     // folks block insecure content with a CSP policy, they don't get a warning.
     // They'll still get a warning in the console about CSP blocking the load.
 
     // FIXME: Should we consider forPreload here?
@@ skipping 798 matching lines @@
 }
 #endif
 
 const ResourceLoaderOptions& ResourceFetcher::defaultResourceOptions()
 {
     DEFINE_STATIC_LOCAL(ResourceLoaderOptions, options, (SendCallbacks, SniffContent, BufferData, AllowStoredCredentials, ClientRequestedCredentials, AskClientForCrossOriginCredentials, DoSecurityCheck, CheckContentSecurityPolicy, UseDefaultOriginRestrictionsForType, DocumentContext));
     return options;
 }
 
 }