[Sync] Fix namespaces for the browser_sync component.

chrome/browser/android/contextualsearch/contextual_search_delegate.cc

 // Copyright 2015 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/android/contextualsearch/contextual_search_delegate.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/command_line.h"
@@ skipping 394 matching lines @@
   if (!is_default_search_provider_google)
     return false;
 
   // Only allow HTTP URLs or HTTPS URLs.
   if (current_page_url.scheme() != url::kHttpScheme &&
       (current_page_url.scheme() != url::kHttpsScheme))
     return false;
 
   // Check that the user has sync enabled, is logged in, and syncs their Chrome
   // History.
-  ProfileSyncService* service =
+  browser_sync::ProfileSyncService* service =
       ProfileSyncServiceFactory::GetInstance()->GetForProfile(profile);
   sync_driver::SyncPrefs sync_prefs(profile->GetPrefs());
   if (service == NULL || !service->CanSyncStart() ||
       !sync_prefs.GetPreferredDataTypes(syncer::UserTypes())
            .Has(syncer::PROXY_TABS) ||
       !service->GetActiveDataTypes().Has(syncer::HISTORY_DELETE_DIRECTIVES)) {
     return false;
   }
 
   return true;
@@ skipping 146 matching lines @@
     const base::DictionaryValue* single_card = nullptr;
     if (!card_dict->GetDictionary(kContextualSearchSingleCard, &single_card))
       continue;
 
     DCHECK(single_card);
     single_card->GetString(kContextualSearchSubTitle, subtitle);
     single_card->GetString(kContextualSearchThumbnailUri, thumbnail);
     return;
   }
 }