Revert of Tests: Simplify SequencedWorkerPoolOwner, call Shutdown on destructor.

content/browser/media/webrtc_identity_store_unittest.cc

 // Copyright 2013 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/bind.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/test/sequenced_worker_pool_owner.h"
 #include "content/browser/media/webrtc_identity_store.h"
 #include "content/public/test/test_browser_thread_bundle.h"
@@ skipping 31 matching lines @@
   WebRtcIdentityStoreTest()
       : browser_thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP |
                                TestBrowserThreadBundle::REAL_DB_THREAD),
         pool_owner_(
             new base::SequencedWorkerPoolOwner(3, "WebRtcIdentityStoreTest")),
         webrtc_identity_store_(
             new WebRTCIdentityStore(base::FilePath(), NULL)) {
     webrtc_identity_store_->SetTaskRunnerForTesting(pool_owner_->pool());
   }
 
+  ~WebRtcIdentityStoreTest() override { pool_owner_->pool()->Shutdown(); }
+
   void SetValidityPeriod(base::TimeDelta validity_period) {
     webrtc_identity_store_->SetValidityPeriodForTesting(validity_period);
   }
 
   void RunUntilIdle() {
     RunAllPendingInMessageLoop(BrowserThread::DB);
     RunAllPendingInMessageLoop(BrowserThread::IO);
     pool_owner_->pool()->FlushForTesting();
     base::RunLoop().RunUntilIdle();
   }
@@ skipping 323 matching lines @@
 
   // Verifies the corrupted table was razed.
   scoped_ptr<sql::Connection> db(new sql::Connection());
   EXPECT_TRUE(db->Open(db_path));
   EXPECT_EQ(0U, sql::test::CountSQLTables(db.get()));
 
   Stop();
 }
 
 }  // namespace content