Revert of Disable baked-in popular sites for iOS.

components/ntp_tiles/popular_sites_impl.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_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 135 matching lines @@
   base::DictionaryValue* site;
   if (!sites->GetDictionary(index, &site)) {
     return;
   }
   site->SetInteger("default_icon_resource", resource_id);
 }
 #endif
 
 // Creates the list of popular sites based on a snapshot available for mobile.
 std::unique_ptr<base::ListValue> DefaultPopularSites() {
-#if !defined(OS_ANDROID)
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
   return base::MakeUnique<base::ListValue>();
 #else
   if (!base::FeatureList::IsEnabled(kPopularSitesBakedInContentFeature)) {
     return base::MakeUnique<base::ListValue>();
   }
   std::unique_ptr<base::ListValue> sites =
       base::ListValue::From(base::JSONReader::Read(
           ResourceBundle::GetSharedInstance().GetRawDataResource(
               IDR_DEFAULT_POPULAR_SITES_JSON)));
   DCHECK(sites);
@@ skipping 266 matching lines @@
                                       kPopularSitesDefaultCountryCode,
                                       kPopularSitesDefaultVersion);
     FetchPopularSites();
   } else {
     DLOG(WARNING) << "Download fallback site list failed";
     callback_.Run(false);
   }
 }
 
 }  // namespace ntp_tiles