Use the same design for all suggestions

components/reading_list/core/reading_list_entry.h

Index: components/reading_list/core/reading_list_entry.h
diff --git a/components/reading_list/core/reading_list_entry.h b/components/reading_list/core/reading_list_entry.h
index 878278b71e2aaf5ba4944721f45f31db0504902c..d0f74512381b2b792bd4aac404b9382ed6503e11 100644
--- a/components/reading_list/core/reading_list_entry.h
+++ b/components/reading_list/core/reading_list_entry.h
@@ -92,7 +92,7 @@ class ReadingListEntry {
   // The URL that has been distilled to produce file stored at |DistilledPath|.
   const GURL& DistilledURL() const;
   // The time distillation was done. The value is in microseconds since Jan 1st
-  // 1970.
+  // 1970. Returns 0 if the entry was not distilled.
   int64_t DistillationTime() const;
   // The size of the stored page in bytes.
   int64_t DistillationSize() const;