Move ntp_tiles classes to namespace ntp_tiles.

components/ntp_tiles/popular_sites.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 "components/ntp_tiles/popular_sites.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 #include "components/search_engines/search_engine_type.h"
 #include "components/search_engines/template_url_prepopulate_data.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/variations/service/variations_service.h"
 #include "net/base/load_flags.h"
 #include "net/http/http_status_code.h"
 
 using net::URLFetcher;
 using variations::VariationsService;
 
+namespace ntp_tiles {
+
 namespace {
 
 const char kPopularSitesURLFormat[] =
     "https://www.gstatic.com/chrome/ntp/suggested_sites_%s_%s.json";
 const char kPopularSitesDefaultCountryCode[] = "DEFAULT";
 const char kPopularSitesDefaultVersion[] = "5";
 const char kPopularSitesLocalFilename[] = "suggested_sites.json";
 const int kPopularSitesRedownloadIntervalHours = 24;
 
 const char kPopularSitesLastDownloadPref[] = "popular_sites_last_download";
@@ skipping 345 matching lines @@
     DLOG(WARNING) << "Download country site list failed";
     is_fallback_ = true;
     pending_country_ = kPopularSitesDefaultCountryCode;
     pending_version_ = kPopularSitesDefaultVersion;
     FetchPopularSites(GetPopularSitesURL());
   } else {
     DLOG(WARNING) << "Download fallback site list failed";
     callback_.Run(false);
   }
 }
+
+}  // namespace ntp_tiles