Add iron-icon and iron-iconset-svg dependency

Change-Id: I378b7c8ff2da699c3e44a8491da84b4f9f6a126d
diff --git a/polygerrit-ui/BUILD b/polygerrit-ui/BUILD
index 38be034..bd390d5 100644
--- a/polygerrit-ui/BUILD
+++ b/polygerrit-ui/BUILD
@@ -15,6 +15,8 @@
         "//lib/js:iron-a11y-keys-behavior",
         "//lib/js:iron-autogrow-textarea",
         "//lib/js:iron-dropdown",
+        "//lib/js:iron-icon",
+        "//lib/js:iron-iconset-svg",
         "//lib/js:iron-input",
         "//lib/js:iron-overlay-behavior",
         "//lib/js:iron-selector",