[Sync] Require ProfileSyncService to have an uninitialized backend on shutdown

chrome/browser/sync/profile_sync_service_typed_url_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 <vector>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 167 matching lines @@
             &profile_, BuildHistoryService).get());
     EXPECT_CALL((*history_service_), ScheduleDBTask(_, _))
         .WillRepeatedly(RunTaskOnDBThread(&history_thread_,
                                           history_backend_.get()));
     history_thread_.Start();
   }
 
   virtual void TearDown() {
     history_backend_ = NULL;
     history_service_ = NULL;
+    service_->Shutdown();
     service_.reset();
     history_thread_.Stop();
     profile_.ResetRequestContext();
     AbstractProfileSyncServiceTest::TearDown();
   }
 
   TypedUrlModelAssociator* StartSyncService(const base::Closure& callback) {
     TypedUrlModelAssociator* model_associator = NULL;
     if (!service_.get()) {
       SigninManager* signin = SigninManagerFactory::GetForProfile(&profile_);
@@ skipping 792 matching lines @@
                    content::Details<history::URLsModifiedDetails>(&details));
 
   history::URLRows new_sync_entries;
   GetTypedUrlsFromSyncDB(&new_sync_entries);
 
   // We should ignore the local file urls (existing and updated),
   // and only be left with the updated http url.
   ASSERT_EQ(1U, new_sync_entries.size());
   EXPECT_TRUE(URLsEqual(updated_url_entry, new_sync_entries[0]));
 }