[sync] Add constexpr to EnumSet

components/reading_list/features/reading_list_switches.h

Index: components/reading_list/features/reading_list_switches.h
diff --git a/components/reading_list/core/reading_list_switches.h b/components/reading_list/features/reading_list_switches.h
similarity index 63%
rename from components/reading_list/core/reading_list_switches.h
rename to components/reading_list/features/reading_list_switches.h
index c99231c5deff612fe442bc4a02bd9d2217727333..1681ddc46a997fcadaf4b3c75650083c5ba3d0f3 100644
--- a/components/reading_list/core/reading_list_switches.h
+++ b/components/reading_list/features/reading_list_switches.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_CORE_READING_LIST_SWITCHES_H_
-#define COMPONENTS_READING_LIST_CORE_READING_LIST_SWITCHES_H_
+#ifndef COMPONENTS_READING_LIST_FEATURES_READING_LIST_SWITCHES_H_
+#define COMPONENTS_READING_LIST_FEATURES_READING_LIST_SWITCHES_H_
 
 namespace reading_list {
 namespace switches {
@@ -12,4 +12,4 @@ bool IsReadingListEnabled();
 }  // namespace switches
 }  // namespace reading_list
 
-#endif  // COMPONENTS_READING_LIST_CORE_READING_LIST_SWITCHES_H_
+#endif  // COMPONENTS_READING_LIST_FEATURES_READING_LIST_SWITCHES_H_