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

net/cert/internal/path_builder_pkits_unittest.cc

Index: net/cert/internal/path_builder_pkits_unittest.cc
diff --git a/net/cert/internal/path_builder_pkits_unittest.cc b/net/cert/internal/path_builder_pkits_unittest.cc
index 4039428687e80f4e954374ddd7d76964a62a95d3..b362519319d47873c07da4f3b1900d6613d5c709 100644
--- a/net/cert/internal/path_builder_pkits_unittest.cc
+++ b/net/cert/internal/path_builder_pkits_unittest.cc
@@ -90,8 +90,7 @@ class PathBuilderPkitsTestDelegate {
                                  &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();
   }