[Sync] Fix namespaces for the browser_sync component.

chrome/browser/ui/search/search_tab_helper_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 "chrome/browser/ui/search/search_tab_helper.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
@@ skipping 80 matching lines @@
         SigninManagerFactory::GetForProfile(profile()));
 
     if (!username.empty()) {
       ASSERT_TRUE(signin_manager);
       signin_manager->SetAuthenticatedAccountInfo(username, username);
     }
   }
 
   // Configure the account to |sync_history| or not.
   void SetHistorySync(bool sync_history) {
-    ProfileSyncServiceMock* sync_service = static_cast<ProfileSyncServiceMock*>(
-        ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile()));
+    browser_sync::ProfileSyncServiceMock* sync_service =
+        static_cast<browser_sync::ProfileSyncServiceMock*>(
+            ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile()));
 
     syncer::ModelTypeSet result;
     if (sync_history) {
       result.Put(syncer::HISTORY_DELETE_DIRECTIVES);
     }
     EXPECT_CALL(*sync_service, GetPreferredDataTypes())
         .WillRepeatedly(Return(result));
   }
 
   bool MessageWasSent(uint32_t id) {
@@ skipping 224 matching lines @@
 };
 
 TEST_F(SearchTabHelperTest, TitleIsSetForNTP) {
   TabTitleObserver title_observer(web_contents());
   NavigateAndCommit(GURL(chrome::kChromeUINewTabURL));
   const base::string16 title = l10n_util::GetStringUTF16(IDS_NEW_TAB_TITLE);
   EXPECT_EQ(title, title_observer.title_on_start());
   EXPECT_EQ(title, title_observer.title_on_commit());
   EXPECT_EQ(title, web_contents()->GetTitle());
 }