Removes the IsReadingListEnabled flags

ios/chrome/browser/ui/ntp/google_landing_controller.mm

 // 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.
 
 #import "ios/chrome/browser/ui/ntp/google_landing_controller.h"
 
 #include <algorithm>
 
 #include "base/i18n/case_conversion.h"
 #import "base/ios/weak_nsobject.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/mac/bind_objc_block.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/user_metrics.h"
 #include "base/metrics/user_metrics_action.h"
 #include "base/strings/sys_string_conversions.h"
 #include "components/favicon/core/large_icon_service.h"
 #include "components/keyed_service/core/service_access_type.h"
 #include "components/ntp_tiles/most_visited_sites.h"
 #include "components/ntp_tiles/ntp_tile.h"
 #include "components/rappor/rappor_service_impl.h"
-#include "components/reading_list/core/reading_list_switches.h"
 #include "components/search_engines/template_url_service.h"
 #include "components/search_engines/template_url_service_observer.h"
 #include "components/strings/grit/components_strings.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #import "ios/chrome/browser/favicon/favicon_loader.h"
 #include "ios/chrome/browser/favicon/favicon_service_factory.h"
 #include "ios/chrome/browser/favicon/ios_chrome_favicon_loader_factory.h"
 #include "ios/chrome/browser/favicon/large_icon_cache.h"
 #import "ios/chrome/browser/metrics/new_tab_page_uma.h"
@@ skipping 1197 matching lines @@
       _headerView.reset([[collectionView
           dequeueReusableSupplementaryViewOfKind:
               UICollectionElementKindSectionHeader
                              withReuseIdentifier:@"header"
                                     forIndexPath:indexPath] retain]);
       [_headerView addSubview:[_doodleController view]];
       [_headerView addSubview:_searchTapTarget];
       [_headerView addViewsToSearchField:_searchTapTarget];
 
       if (!IsIPadIdiom()) {
         ReadingListModel* readingListModel = nullptr;

[sdefresne, 2017/03/23 15:49:06]

nit: merge the two lines

[gambard, 2017/03/23 15:53:16]

Done.

-        if (reading_list::switches::IsReadingListEnabled()) {
-          readingListModel =
-              ReadingListModelFactory::GetForBrowserState(_browserState);
-        }
+        readingListModel =
+            ReadingListModelFactory::GetForBrowserState(_browserState);
         // iPhone header also contains a toolbar since the normal toolbar is
         // hidden.
         [_headerView addToolbarWithDelegate:_webToolbarDelegate
                                     focuser:_focuser
                                    tabModel:_tabModel
                            readingListModel:readingListModel];
       }
       [_supplementaryViews addObject:_headerView];
     }
     return _headerView;
@@ skipping 484 matching lines @@
   if (!view) {
     return nil;
   }
   if ([view isKindOfClass:aClass]) {
     return view;
   }
   return [self nearestAncestorOfView:[view superview] withClass:aClass];
 }
 
 @end