[Sync] Refactored ProfileSyncService and remove its backend() function

chrome/browser/sync/profile_sync_service_password_unittest.cc

 // Copyright (c) 2010 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/task.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/password_manager/password_store.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/sync/abstract_profile_sync_service_test.h"
 #include "chrome/browser/sync/engine/syncapi.h"
 #include "chrome/browser/sync/glue/password_change_processor.h"
 #include "chrome/browser/sync/glue/password_data_type_controller.h"
 #include "chrome/browser/sync/glue/password_model_associator.h"
 #include "chrome/browser/sync/profile_sync_factory.h"
 #include "chrome/browser/sync/profile_sync_factory_mock.h"
 #include "chrome/browser/sync/profile_sync_service.h"
 #include "chrome/browser/sync/profile_sync_test_util.h"
 #include "chrome/browser/sync/protocol/password_specifics.pb.h"
@@ skipping 182 matching lines @@
           Observe(
               NotificationType(NotificationType::SYNC_CONFIGURE_DONE),
               _,_)).
           WillOnce(QuitUIMessageLoop());
       service_->SetPassphrase("foo", false, true);
       MessageLoop::current()->Run();
     }
   }
 
   void AddPasswordSyncNode(const PasswordForm& entry) {
-    sync_api::WriteTransaction trans(
-        service_->backend()->GetUserShareHandle());
+    sync_api::WriteTransaction trans(service_->GetUserShare());
     sync_api::ReadNode password_root(&trans);
     ASSERT_TRUE(password_root.InitByTagLookup(browser_sync::kPasswordTag));
 
     sync_api::WriteNode node(&trans);
     std::string tag = PasswordModelAssociator::MakeTag(entry);
     ASSERT_TRUE(node.InitUniqueByCreation(syncable::PASSWORDS,
                                           password_root,
                                           tag));
     PasswordModelAssociator::WriteToSyncNode(entry, &node);
   }
 
   void GetPasswordEntriesFromSyncDB(std::vector<PasswordForm>* entries) {
-    sync_api::ReadTransaction trans(service_->backend()->GetUserShareHandle());
+    sync_api::ReadTransaction trans(service_->GetUserShare());
     sync_api::ReadNode password_root(&trans);
     ASSERT_TRUE(password_root.InitByTagLookup(browser_sync::kPasswordTag));
 
     int64 child_id = password_root.GetFirstChildId();
     while (child_id != sync_api::kInvalidId) {
       sync_api::ReadNode child_node(&trans);
       ASSERT_TRUE(child_node.InitByIdLookup(child_id));
 
       const sync_pb::PasswordSpecificsData& password =
           child_node.GetPasswordSpecifics();
@@ skipping 282 matching lines @@
   AddPasswordEntriesTask node_task(this, sync_forms);
 
   StartSyncService(&root_task, &node_task);
 
   std::vector<PasswordForm> new_sync_forms;
   GetPasswordEntriesFromSyncDB(&new_sync_forms);
 
   EXPECT_EQ(1U, new_sync_forms.size());
   EXPECT_TRUE(ComparePasswords(expected_forms[0], new_sync_forms[0]));
 }