`<link rel=preload>` with no `as` should be subject to connect-src

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

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 166 matching lines @@
     if (equalIgnoringCase(as, "style"))
         return Resource::CSSStyleSheet;
     if (equalIgnoringCase(as, "audio") || equalIgnoringCase(as, "video"))
         return Resource::Media;
     if (equalIgnoringCase(as, "font"))
         return Resource::Font;
     if (equalIgnoringCase(as, "track"))
         return Resource::TextTrack;
     if (document && !as.isEmpty())
         document->addConsoleMessage(ConsoleMessage::create(OtherMessageSource, WarningMessageLevel, String("<link rel=preload> must have a valid `as` value")));
-    // TODO(yoav): Is this correct? If as is missing or invalid, it should be subject to "connect-src" CSP directives.
-    return Resource::LinkSubresource;
+    return Resource::LinkPreload;
 }
 
 void LinkLoader::createLinkPreloadResourceClient(ResourcePtr<Resource> resource)
 {
     if (!resource)
         return;
     switch (resource->type()) {
     case Resource::Image:
         m_linkPreloadResourceClient = LinkPreloadImageResourceClient::create(this, toImageResource(resource.get()));
         break;
@@ skipping 133 matching lines @@
 
 DEFINE_TRACE(LinkLoader)
 {
     visitor->trace(m_client);
     visitor->trace(m_prerender);
     visitor->trace(m_linkPreloadResourceClient);
     ResourceOwner<Resource, ResourceClient>::trace(visitor);
 }
 
 }