[Sync] Fix namespaces for the browser_sync component.

chrome/browser/ui/webui/signin/sync_confirmation_handler_unittest.cc

 // Copyright 2016 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 "chrome/browser/ui/webui/signin/sync_confirmation_handler.h"
 
 #include "base/test/user_action_tester.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile_avatar_icon_util.h"
 #include "chrome/browser/signin/account_fetcher_service_factory.h"
@@ skipping 89 matching lines @@
   FakeAccountFetcherService* account_fetcher_service() {
     return static_cast<FakeAccountFetcherService*>(
         AccountFetcherServiceFactory::GetForProfile(profile()));
   }
 
   FakeSigninManager* signin_manager() {
     return static_cast<FakeSigninManager*>(
         SigninManagerFactory::GetForProfile(profile()));
   }
 
-  ProfileSyncService* sync() {
+  browser_sync::ProfileSyncService* sync() {
     return ProfileSyncServiceFactory::GetForProfile(profile());
   }
 
   base::UserActionTester* user_action_tester() {
     return &user_action_tester_;
   }
 
   // BrowserWithTestWindowTest
   BrowserWindow* CreateBrowserWindow() override {
     return new DialogTestBrowserWindow;
@@ skipping 126 matching lines @@
   EXPECT_FALSE(sync()->IsFirstSetupInProgress());
   EXPECT_TRUE(sync()->IsFirstSetupComplete());
   EXPECT_TRUE(
       SigninManagerFactory::GetForProfile(profile())->IsAuthenticated());
   EXPECT_EQ(0, user_action_tester()->GetActionCount("Signin_Undo_Signin"));
   EXPECT_EQ(1, user_action_tester()->GetActionCount(
       "Signin_Signin_WithDefaultSyncSettings"));
   EXPECT_EQ(0, user_action_tester()->GetActionCount(
       "Signin_Signin_WithAdvancedSyncSettings"));
 }