[polymer] import all elements

pkg/polymer/lib/elements/polymer-ui-arrow/polymer-ui-arrow.css

Index: pkg/polymer/lib/elements/polymer-ui-arrow/polymer-ui-arrow.css
diff --git a/pkg/polymer/lib/elements/polymer-ui-arrow/polymer-ui-arrow.css b/pkg/polymer/lib/elements/polymer-ui-arrow/polymer-ui-arrow.css
new file mode 100644
index 0000000000000000000000000000000000000000..b5cf1ee382f389a0146664803aa81738daefcfb6
--- /dev/null
+++ b/pkg/polymer/lib/elements/polymer-ui-arrow/polymer-ui-arrow.css
@@ -0,0 +1,24 @@
+/*
+Copyright 2013 The Polymer Authors. All rights reserved.
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file.
+*/
+
+:host {
+  display: inline-block;
+  position: relative;
+  overflow: hidden;
+}
+  
+:host([hidden]:host, .hidden:host) {
+  display: none;
+}
+      
+.arrow {
+  border-color: transparent;
+  border-style: solid;
+}
+
+.arrow-inner {
+	position: absolute;
+}