Update Polymer components.

third_party/polymer/components/iron-fit-behavior/.bower.json

Index: third_party/polymer/components/iron-fit-behavior/.bower.json
diff --git a/third_party/polymer/components/iron-fit-behavior/.bower.json b/third_party/polymer/components/iron-fit-behavior/.bower.json
index 3de44d3d2a470d372f6f5f9ecb21f90fbfac2145..6078a5b7ea8c6952f54e3d9deedf2371b6cdac30 100644
--- a/third_party/polymer/components/iron-fit-behavior/.bower.json
+++ b/third_party/polymer/components/iron-fit-behavior/.bower.json
@@ -1,6 +1,6 @@
 {
   "name": "iron-fit-behavior",
-  "version": "1.2.6",
+  "version": "1.2.7",
   "license": "http://polymer.github.io/LICENSE.txt",
   "description": "Fits an element inside another element",
   "private": true,
@@ -29,11 +29,11 @@
   },
   "ignore": [],
   "homepage": "https://github.com/PolymerElements/iron-fit-behavior",
-  "_release": "1.2.6",
+  "_release": "1.2.7",
   "_resolution": {
     "type": "version",
-    "tag": "v1.2.6",
-    "commit": "e3292f5128b3c7d984c6edc4586439e61e17aa8f"
+    "tag": "v1.2.7",
+    "commit": "c4b8a39c910da28ca8846fe960c244ce2f64f7be"
   },
   "_source": "https://github.com/PolymerElements/iron-fit-behavior.git",
   "_target": "^1.0.0",