Block subresource requests whose URLs include credentials.

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

 /*
  * Copyright (C) 2013 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 785 matching lines @@
 
       // TODO(mkwst): Drop the runtime-enabled check in M59:
       // https://www.chromestatus.com/feature/5709390967472128
       if (RuntimeEnabledFeatures::blockLegacySubresourcesEnabled())
         return ResourceRequestBlockedReason::Origin;
     }
     if (!url.user().isEmpty() || !url.pass().isEmpty()) {
       Deprecation::countDeprecation(
           frame()->document(),
           UseCounter::RequestedSubresourceWithEmbeddedCredentials);
+      // TODO(mkwst): Remove the runtime-enabled check in M59:
+      // https://www.chromestatus.com/feature/5669008342777856
+      if (RuntimeEnabledFeatures::blockCredentialedSubresourcesEnabled())
+        return ResourceRequestBlockedReason::Origin;
     }
   }
 
   // Check for mixed content. We do this second-to-last so that when folks block
   // mixed 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.
   if (MixedContentChecker::shouldBlockFetch(frame(), resourceRequest, url,
                                             reportingPolicy))
     return ResourceRequestBlockedReason::MixedContent;
 
@@ skipping 259 matching lines @@
                                                     response);
 }
 
 DEFINE_TRACE(FrameFetchContext) {
   visitor->trace(m_document);
   visitor->trace(m_documentLoader);
   FetchContext::trace(visitor);
 }
 
 }  // namespace blink