Move ntp_tiles classes to namespace ntp_tiles.

components/ntp_tiles/most_visited_sites.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 "components/ntp_tiles/most_visited_sites.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 15 matching lines @@
 #include "components/variations/variations_associated_data.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/jpeg_codec.h"
 #include "url/gurl.h"
 
 using history::TopSites;
 using suggestions::ChromeSuggestion;
 using suggestions::SuggestionsProfile;
 using suggestions::SuggestionsService;
 
+namespace ntp_tiles {
+
 namespace {
 
 // Identifiers for the various tile sources.
 const char kHistogramClientName[] = "client";
 const char kHistogramServerName[] = "server";
 const char kHistogramServerFormat[] = "server%d";
 const char kHistogramPopularName[] = "popular";
 const char kHistogramWhitelistName[] = "whitelist";
 
 const char kPopularSitesFieldTrialName[] = "NTPPopularSites";
@@ skipping 610 matching lines @@
 
 void MostVisitedSites::TopSitesLoaded(TopSites* top_sites) {}
 
 void MostVisitedSites::TopSitesChanged(TopSites* top_sites,
                                        ChangeReason change_reason) {
   if (mv_source_ == TOP_SITES) {
     // The displayed suggestions are invalidated.
     InitiateTopSitesQuery();
   }
 }
+
+}  // namespace ntp_tiles