Polymer elements added to third_party/polymer.

third_party/polymer/components/paper-tabs/paper-tabs.css

Index: third_party/polymer/components/paper-tabs/paper-tabs.css
diff --git a/third_party/polymer/components/paper-tabs/paper-tabs.css b/third_party/polymer/components/paper-tabs/paper-tabs.css
new file mode 100644
index 0000000000000000000000000000000000000000..b247c1c91122d64f1b22616385ee81c696b62fd9
--- /dev/null
+++ b/third_party/polymer/components/paper-tabs/paper-tabs.css
@@ -0,0 +1,57 @@
+/*
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+*/
+
+:host {
+  display: block;
+  position: relative;
+  font-size: 14px;
+  font-weight: 500;
+  height: 48px;
+  overflow: hidden;
+}
+
+#tabsContainer {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  white-space: nowrap;
+}
+
+#selectionBar {
+  position: absolute;
+  height: 2px;
+  bottom: 0;
+  left: 0;
+  width: 0;
+  background-color: #ffff8d;
+  transition: width, left;
+}
+
+#selectionBar[hidden] {
+  display: hidden;
+}
+
+#selectionBar.expand {
+  transition-duration: 0.15s;
+  transition-timing-function: cubic-bezier(0.4, 0.0, 1, 1);
+}
+
+#selectionBar.contract {
+  transition-duration: 0.1s;
+  transition-timing-function: cubic-bezier(0.0, 0.0, 0.2, 1);
+}
+
+polyfill-next-selector { content: '#tabsContainer > *:not(#selectionBar)'; }
+::content > * {
+  -ms-flex: 1;
+  -webkit-flex: 1;
+  flex: 1;
+}