Reading List create protobuf store

ios/chrome/browser/reading_list/reading_list_pref_names.cc

Index: ios/chrome/browser/reading_list/reading_list_pref_names.cc
diff --git a/ios/chrome/browser/reading_list/reading_list_pref_names.cc b/ios/chrome/browser/reading_list/reading_list_pref_names.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a85053161b0620d5a604707acb85a89d1f28f969
--- /dev/null
+++ b/ios/chrome/browser/reading_list/reading_list_pref_names.cc
@@ -0,0 +1,15 @@
+// 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/reading_list_pref_names.h"
+
+namespace reading_list {
+namespace prefs {
+
+// Boolean which if some reading list entries have never been seen on this

[jif-google, 2016/09/27 16:39:03]

How about:
// Key for a boolean storing whether some reading list entries have never been
seen on this device. Not synced.

[gambard, 2016/09/28 09:19:08]

Is it "never seen" or "in unread state"? Is this true if the user take a read
entry and mark it as unread?

[Olivier, 2016/09/28 11:20:06]

unseen means "never opened the view since entry was added".
I think the case you describe should not result in the an unseen state.

+// device. Not synced.
+const char kReadingListHasUnseenEntries[] = "reading_list.has_unseen_entries";
+
+}  // namespace prefs
+}  // namespace reading_list