Open the LoginDatabase on the DB thread, not the UI thread.

components/password_manager/core/browser/password_store_unittest.cc

 // Copyright (c) 2012 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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "base/synchronization/waitable_event.h"
@@ skipping 27 matching lines @@
 
   MOCK_METHOD1(StartSyncFlare, void(syncer::ModelType));
 };
 
 }  // namespace
 
 class PasswordStoreTest : public testing::Test {
  protected:
   void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-    login_db_.reset(new LoginDatabase());
-    ASSERT_TRUE(login_db_->Init(temp_dir_.path().Append(
-        FILE_PATH_LITERAL("login_test"))));
   }
 
   void TearDown() override { ASSERT_TRUE(temp_dir_.Delete()); }
 
+  base::FilePath test_login_db_file_path() const {
+    return temp_dir_.path().Append(FILE_PATH_LITERAL("login_test"));
+  }
+
   base::MessageLoopForUI message_loop_;
-  scoped_ptr<LoginDatabase> login_db_;
   base::ScopedTempDir temp_dir_;
 };
 
 ACTION(STLDeleteElements0) {
   STLDeleteContainerPointers(arg0.begin(), arg0.end());
 }
 
 TEST_F(PasswordStoreTest, IgnoreOldWwwGoogleLogins) {
   scoped_refptr<PasswordStoreDefault> store(new PasswordStoreDefault(
       base::MessageLoopProxy::current(),
       base::MessageLoopProxy::current(),
-      login_db_.release()));
+      test_login_db_file_path()));
   store->Init(syncer::SyncableService::StartSyncFlare());
 
   const time_t cutoff = 1325376000;  // 00:00 Jan 1 2012 UTC
   // The passwords are all empty because PasswordStoreDefault doesn't store the
   // actual passwords on OS X (they're stored in the Keychain instead). We could
   // special-case it, but it's easier to just have empty passwords.
   static const PasswordFormData form_data[] = {
     // A form on https://www.google.com/ older than the cutoff. Will be ignored.
     { PasswordForm::SCHEME_HTML,
       "https://www.google.com",
@@ skipping 109 matching lines @@
 
   STLDeleteElements(&all_forms);
   store->Shutdown();
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 TEST_F(PasswordStoreTest, StartSyncFlare) {
   scoped_refptr<PasswordStoreDefault> store(new PasswordStoreDefault(
       base::MessageLoopProxy::current(),
       base::MessageLoopProxy::current(),
-      login_db_.release()));
+      test_login_db_file_path()));
   StartSyncFlareMock mock;
   store->Init(
       base::Bind(&StartSyncFlareMock::StartSyncFlare, base::Unretained(&mock)));
   {
     PasswordForm form;
     EXPECT_CALL(mock, StartSyncFlare(syncer::PASSWORDS));
     store->AddLogin(form);
     base::MessageLoop::current()->RunUntilIdle();
   }
   store->Shutdown();
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 }  // namespace password_manager