Enable RL sync by default on iOS

ios/chrome/browser/reading_list/offline_url_utils.cc

 // Copyright 2016 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 "ios/chrome/browser/reading_list/offline_url_utils.h"
 
 #include "base/md5.h"
 #include "base/strings/stringprintf.h"
-#include "components/reading_list/offline_url_utils.h"
+#include "components/reading_list/ios/offline_url_utils.h"
 #include "ios/chrome/browser/chrome_url_constants.h"
 
 namespace reading_list {
 
 GURL DistilledURLForPath(const base::FilePath& distilled_path) {
   if (distilled_path.empty()) {
     return GURL();
   }
   return GURL(kChromeUIOfflineURL + distilled_path.value());
 }
 
 GURL FileURLForDistilledURL(const GURL& distilled_url,
                             const base::FilePath& profile_path,
                             GURL* resources_root_url) {
   if (!distilled_url.is_valid()) {
     return GURL();
   }
   DCHECK(distilled_url.SchemeIs(kChromeUIScheme));
   base::FilePath offline_path = OfflineRootDirectoryPath(profile_path);
 
   GURL file_url(base::StringPrintf("%s%s", url::kFileScheme,
                                    url::kStandardSchemeSeparator) +
                 offline_path.value() + distilled_url.path());
   if (resources_root_url) {
     *resources_root_url = file_url.Resolve(".");
   }
   return file_url;
 }
 }