Update Polymer components.

third_party/polymer/components/iron-meta/.bower.json

Index: third_party/polymer/components/iron-meta/.bower.json
diff --git a/third_party/polymer/components/iron-meta/.bower.json b/third_party/polymer/components/iron-meta/.bower.json
index 757a90a477b6a71c42492182abc557b360ba91fc..b8b8970a7bf43b1adb7e33de613cb3862a2daa18 100644
--- a/third_party/polymer/components/iron-meta/.bower.json
+++ b/third_party/polymer/components/iron-meta/.bower.json
@@ -1,6 +1,6 @@
 {
   "name": "iron-meta",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "keywords": [
     "web-components",
     "polymer"
@@ -28,11 +28,11 @@
   "main": "iron-meta.html",
   "ignore": [],
   "homepage": "https://github.com/polymerelements/iron-meta",
-  "_release": "1.1.2",
+  "_release": "1.1.3",
   "_resolution": {
     "type": "version",
-    "tag": "v1.1.2",
-    "commit": "bae96531b63ea6d4ce982f5592248aea849c0f5a"
+    "tag": "v1.1.3",
+    "commit": "ec0afd727a0af36509264a78b691484123dc7bf6"
   },
   "_source": "https://github.com/polymerelements/iron-meta.git",
   "_target": "^1.0.0",