Ensure class.html is imported before patching it.

Polymer · Jun 21, 2018 · 2214b9e · 2214b9e
1 parent 4ec63a4
commit 2214b9e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/lib/legacy/legacy-data-mixin.html b/lib/legacy/legacy-data-mixin.html
@@ -8,6 +8,7 @@
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 
+<link rel="import" href="../class.html">
 <link rel="import" href="../utils/mixin.html">
 
 <script>