Index: components/webdata/common/web_database_table.h |
diff --git a/components/webdata/common/web_database_table.h b/components/webdata/common/web_database_table.h |
index ff75082ed46d257a85943e8d21c5b107fd6050a1..45011710bfaef254a435118c7eebe912dbf49b62 100644 |
--- a/components/webdata/common/web_database_table.h |
+++ b/components/webdata/common/web_database_table.h |
@@ -47,8 +47,9 @@ class WEBDATA_EXPORT WebDatabaseTable { |
// Migrates this table to |version|. Returns false if there was |
// migration work to do and it failed, true otherwise. |
// |
- // Implementations may set |*update_compatible_version| to true if |
- // the compatible version should be changed to |version|. |
+ // Implementations may set |*update_compatible_version| to true if the |
+ // compatible version should be changed to |version|, i.e., if the change will |
+ // break previous versions when they try to use the updated database. |
// Implementations should otherwise not modify this parameter. |
virtual bool MigrateToVersion(int version, |
bool* update_compatible_version) = 0; |