Make NSSCertDatabase::ListCerts work async on a worker thread.

chromeos/cert_loader_unittest.cc

 // Copyright 2014 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 "chromeos/cert_loader.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 38 matching lines @@
   virtual ~CertLoaderTest() {}
 
   virtual void SetUp() OVERRIDE {
     ASSERT_TRUE(primary_user_.constructed_successfully());
     ASSERT_TRUE(
         crypto::GetPublicSlotForChromeOSUser(primary_user_.username_hash()));
 
     CertLoader::Initialize();
     cert_loader_ = CertLoader::Get();
     cert_loader_->AddObserver(this);
-    cert_loader_->SetSlowTaskRunnerForTest(message_loop_.message_loop_proxy());
   }
 
   virtual void TearDown() {
     cert_loader_->RemoveObserver(this);
     CertLoader::Shutdown();
   }
 
  protected:
   // CertLoader::Observer:
   // The test keeps count of times the observer method was called.
@@ skipping 23 matching lines @@
     crypto::ScopedPK11Slot private_slot(
         crypto::GetPrivateSlotForChromeOSUser(
             user->username_hash(),
             base::Bind(&NotReachedPrivateSlotCallback)));
     if (!private_slot)
       return database.Pass();
 
     database.reset(new net::NSSCertDatabaseChromeOS(
         crypto::GetPublicSlotForChromeOSUser(user->username_hash()),
         private_slot.Pass()));
+    database->SetSlowTaskRunnerForTest(message_loop_.message_loop_proxy());
     return database.Pass();
   }
 
   int GetDbPrivateSlotId(net::NSSCertDatabase* db) {
     return static_cast<int>(PK11_GetSlotID(db->GetPrivateSlot().get()));
   }
 
   bool ImportCACerts(const std::string& cert_file,
                      net::NSSCertDatabase* database,
                      net::CertificateList* imported_certs) {
@@ skipping 214 matching lines @@
   ASSERT_TRUE(NewCertificatesLoadedEventsCountEquals(0U));
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(NewCertificatesLoadedEventsCountEquals(1U));
 
   ASSERT_FALSE(IsCertInCertificateList(client_certs[0],
                                        cert_loader_->cert_list()));
 }
 
 }  // namespace
 }  // namespace chromeos