Enable RL sync by default on iOS

components/reading_list/ios/reading_list_entry.h

Index: components/reading_list/ios/reading_list_entry.h
diff --git a/components/reading_list/reading_list_entry.h b/components/reading_list/ios/reading_list_entry.h
similarity index 96%
rename from components/reading_list/reading_list_entry.h
rename to components/reading_list/ios/reading_list_entry.h
index 6dfec985ca14405ff01619c270f2e0c644c0040f..0f87c1487a17582570dda9aed55d4fdec676cc05 100644
--- a/components/reading_list/reading_list_entry.h
+++ b/components/reading_list/ios/reading_list_entry.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_READING_LIST_READING_LIST_ENTRY_H_
-#define COMPONENTS_READING_LIST_READING_LIST_ENTRY_H_
+#ifndef COMPONENTS_READING_LIST_IOS_READING_LIST_ENTRY_H_
+#define COMPONENTS_READING_LIST_IOS_READING_LIST_ENTRY_H_
 
 #include <string>
 
@@ -137,4 +137,4 @@ class ReadingListEntry {
   DISALLOW_COPY_AND_ASSIGN(ReadingListEntry);
 };
 
-#endif  // COMPONENTS_READING_LIST_READING_LIST_ENTRY_H_
+#endif  // COMPONENTS_READING_LIST_IOS_READING_LIST_ENTRY_H_