Polymer elements added to third_party/polymer.

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

Index: third_party/polymer/components/paper-item/paper-item.css
diff --git a/third_party/polymer/components/paper-item/paper-item.css b/third_party/polymer/components/paper-item/paper-item.css
new file mode 100644
index 0000000000000000000000000000000000000000..d6a191e5644fb688cbb1c7e78c1db073aa7025d4
--- /dev/null
+++ b/third_party/polymer/components/paper-item/paper-item.css
@@ -0,0 +1,31 @@
+html /deep/ paper-item {
+  display: block;
+  position: relative;
+  -webkit-user-select: none;
+  user-select: none;
+  cursor: pointer;
+  height: 36px;
+  padding: 0 12px;
+  white-space: nowrap;
+}
+
+html /deep/ paper-item::shadow #ripple {
+  position: absolute;
+  top: 0;
+  left: 0;
+  bottom: 0;
+  right: 0;
+  pointer-events: none;
+}
+
+html /deep/ paper-item::shadow #icon {
+  margin-right: 8px;
+}
+
+html /deep/ paper-item::shadow ::content > a {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+}