Tests: Simplify SequencedWorkerPoolOwner, call Shutdown on destructor.

components/autofill/core/browser/test_autofill_driver.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 "components/autofill/core/browser/test_autofill_driver.h"
 
 #include "base/test/sequenced_worker_pool_owner.h"
 #include "base/threading/sequenced_worker_pool.h"
 
 namespace autofill {
 
 TestAutofillDriver::TestAutofillDriver()
     : blocking_pool_owner_(
           new base::SequencedWorkerPoolOwner(4, "TestAutofillDriver")),
       url_request_context_(NULL) {}
 
-TestAutofillDriver::~TestAutofillDriver() {
-  blocking_pool_owner_->pool()->Shutdown();
-}
+TestAutofillDriver::~TestAutofillDriver() {}
 
 bool TestAutofillDriver::IsOffTheRecord() const {
   return false;
 }
 
 net::URLRequestContextGetter* TestAutofillDriver::GetURLRequestContext() {
   return url_request_context_;
 }
 
 base::SequencedWorkerPool* TestAutofillDriver::GetBlockingPool() {
@@ skipping 37 matching lines @@
 }
 
 void TestAutofillDriver::RendererShouldPreviewFieldWithValue(
     const base::string16& value) {
 }
 
 void TestAutofillDriver::PopupHidden() {
 }
 
 }  // namespace autofill