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

net/cert/internal/path_builder_pkits_unittest.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 "net/cert/internal/path_builder.h"
 
 #include "net/base/net_errors.h"
 #include "net/cert/internal/cert_issuer_source_static.h"
 #include "net/cert/internal/parse_certificate.h"
 #include "net/cert/internal/parsed_certificate.h"
@@ skipping 72 matching lines @@
     SimpleSignaturePolicy signature_policy(1024);
 
     // Run all tests at the time the PKITS was published.
     der::GeneralizedTime time = {2011, 4, 15, 0, 0, 0};
 
     CertPathBuilder::Result result;
     CertPathBuilder path_builder(std::move(target_cert), &trust_store,
                                  &signature_policy, time, &result);
     path_builder.AddCertIssuerSource(&cert_issuer_source);
 
-    CompletionStatus rv = path_builder.Run(base::Closure());
-    EXPECT_EQ(CompletionStatus::SYNC, rv);
+    path_builder.Run();
 
     return result.HasValidPath();
   }
 };
 
 }  // namespace
 
 class PkitsTest01SignatureVerificationCustomPathBuilderFoo
     : public PkitsTest<PathBuilderPkitsTestDelegate> {};
 
@@ skipping 117 matching lines @@
 
 // TODO(mattm): CRL support: PkitsTest04BasicCertificateRevocationTests,
 // PkitsTest05VerifyingPathswithSelfIssuedCertificates,
 // PkitsTest14DistributionPoints, PkitsTest15DeltaCRLs
 
 // TODO(mattm): Certificate Policies support: PkitsTest08CertificatePolicies,
 // PkitsTest09RequireExplicitPolicy PkitsTest10PolicyMappings,
 // PkitsTest11InhibitPolicyMapping, PkitsTest12InhibitAnyPolicy
 
 }  // namespace net