MD Downloads: pick up iron-list PR to fix unassigned model (stacking)

third_party/polymer/v1_0/components-chromium/iron-list/bower.json

Index: third_party/polymer/v1_0/components-chromium/iron-list/bower.json
diff --git a/third_party/polymer/v1_0/components-chromium/iron-list/bower.json b/third_party/polymer/v1_0/components-chromium/iron-list/bower.json
index 9854a604e9d6f7b415d131964097db8799569c5b..92d98b10f9c8d66bbb1953f1655aceb7d287b44e 100644
--- a/third_party/polymer/v1_0/components-chromium/iron-list/bower.json
+++ b/third_party/polymer/v1_0/components-chromium/iron-list/bower.json
@@ -7,7 +7,7 @@
     "list",
     "virtual-list"
   ],
-  "version": "1.3.10",
+  "version": "1.3.12",
   "homepage": "https://github.com/PolymerElements/iron-list",
   "authors": [
     "The Polymer Authors"
@@ -23,7 +23,7 @@
     "polymer": "Polymer/polymer#^1.1.0",
     "iron-resizable-behavior": "polymerelements/iron-resizable-behavior#^1.0.0",
     "iron-a11y-keys-behavior": "polymerelements/iron-a11y-keys-behavior#^1.0.0",
-    "iron-scroll-target-behavior": "PolymerElements/iron-scroll-target-behavior#^1.0.0"
+    "iron-scroll-target-behavior": "PolymerElements/iron-scroll-target-behavior#^1.1.0"
   },
   "devDependencies": {
     "app-layout": "polymerelements/app-layout#^0.10.0",