[Sync] Fix namespaces for the browser_sync component.

chrome/browser/ui/search/search_tab_helper.cc

 // Copyright 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 "chrome/browser/ui/search/search_tab_helper.h"
 
 #include <memory>
 #include <set>
 
 #include "base/memory/ptr_util.h"
@@ skipping 105 matching lines @@
     UMA_HISTOGRAM_TIMES("Tab.NewTabOnload.Local", duration);
   }
   core_tab_helper->set_new_tab_start_time(base::TimeTicks());
 }
 
 // Returns true if the user wants to sync history. This function returning true
 // is not a guarantee that history is being synced, but it can be used to
 // disable a feature that should not be shown to users who prefer not to sync
 // their history.
 bool IsHistorySyncEnabled(Profile* profile) {
-  ProfileSyncService* sync =
+  browser_sync::ProfileSyncService* sync =
       ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
   return sync &&
       sync->GetPreferredDataTypes().Has(syncer::HISTORY_DELETE_DIRECTIVES);
 }
 
 }  // namespace
 
 SearchTabHelper::SearchTabHelper(content::WebContents* web_contents)
     : WebContentsObserver(web_contents),
       is_search_enabled_(search::IsInstantExtendedAPIEnabled()),
@@ skipping 363 matching lines @@
 
 bool SearchTabHelper::IsInputInProgress() const {
   OmniboxView* omnibox = GetOmniboxView();
   return !model_.mode().is_ntp() && omnibox &&
       omnibox->model()->focus_state() == OMNIBOX_FOCUS_VISIBLE;
 }
 
 OmniboxView* SearchTabHelper::GetOmniboxView() const {
   return delegate_ ? delegate_->GetOmniboxView() : NULL;
 }