Remove dependence on a message loop for net::PathBuilder.

components/cast_certificate/cast_crl.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/cast_certificate/cast_crl.h"
 
 #include <unordered_map>
 #include <unordered_set>
 
 #include "base/base64.h"
@@ skipping 127 matching lines @@
   // Verify the issuer certificate.
   net::der::GeneralizedTime verification_time;
   if (!net::der::EncodeTimeAsGeneralizedTime(time, &verification_time)) {
     VLOG(2) << "CRL - Unable to parse verification time.";
     return false;
   }
   net::CertPathBuilder::Result result;
   net::CertPathBuilder path_builder(parsed_cert.get(), trust_store,
                                     signature_policy.get(), verification_time,
                                     &result);
-  net::CompletionStatus rv = path_builder.Run(base::Closure());
-  DCHECK_EQ(rv, net::CompletionStatus::SYNC);
+  path_builder.Run();
   if (!result.HasValidPath()) {
     VLOG(2) << "CRL - Issuer certificate verification failed.";
     // TODO(crbug.com/634443): Log the error information.
     return false;
   }
   // There are no requirements placed on the leaf certificate having any
   // particular KeyUsages. Leaf certificate checks are bypassed.
 
   // Verify the CRL is still valid.
   net::der::GeneralizedTime not_before;
@@ skipping 190 matching lines @@
       LOG(ERROR) << "CRL - Verification failed.";
       return nullptr;
     }
     return base::MakeUnique<CastCRLImpl>(tbs_crl, overall_not_after);
   }
   LOG(ERROR) << "No supported version of revocation data.";
   return nullptr;
 }
 
 }  // namespace cast_certificate