Update Polymer components.

third_party/polymer/components/iron-icon/.travis.yml

Index: third_party/polymer/components/iron-icon/.travis.yml
diff --git a/third_party/polymer/components/iron-icon/.travis.yml b/third_party/polymer/components/iron-icon/.travis.yml
index 2db9ed51d9dce8818edc39ac14c2564f7579cf99..87da386ce8026205636281af00fe6bd734a0e2b0 100644
--- a/third_party/polymer/components/iron-icon/.travis.yml
+++ b/third_party/polymer/components/iron-icon/.travis.yml
@@ -1,23 +1,24 @@
 language: node_js
 sudo: required
 before_script:
-- npm install -g bower polylint web-component-tester
-- bower install
-- polylint
+  - npm install -g bower polylint web-component-tester
+  - bower install
+  - polylint
 env:
   global:
-  - secure: TTp7q3OKEpaFqnqbYczhMd8iXTa1Ya0jOQVq1OhljpJogLWb78qvHLHgnxgMWkw+/KDyE5KHW1CXhYUQa7C9QF2Zn7uoN27+7+4q7HuK3pTuUtqdfstLVuLHQrfK6VqUT4XjSpeMzNX/HxuD3EMBH0bMBR4CIr76sLJOuIL/XF8=
-  - secure: damHvQXygRYIJG/8Vmqh7U4zxoi5224JIZiZVQL6I5z//s5zqHq6AqwDyfOoc0zWndJCwE8NvOzKD/lmVYXIsPcY95kkZS45Dbye0krYWUzKnv42rDi/7olXcg647iAEDVhW3BRHmA+opzQtKUpAkXl97DtPVkszLL1ReyNyv3A=
-node_js: stable
+    - secure: >-
+        TTp7q3OKEpaFqnqbYczhMd8iXTa1Ya0jOQVq1OhljpJogLWb78qvHLHgnxgMWkw+/KDyE5KHW1CXhYUQa7C9QF2Zn7uoN27+7+4q7HuK3pTuUtqdfstLVuLHQrfK6VqUT4XjSpeMzNX/HxuD3EMBH0bMBR4CIr76sLJOuIL/XF8=
+    - secure: >-
+        damHvQXygRYIJG/8Vmqh7U4zxoi5224JIZiZVQL6I5z//s5zqHq6AqwDyfOoc0zWndJCwE8NvOzKD/lmVYXIsPcY95kkZS45Dbye0krYWUzKnv42rDi/7olXcg647iAEDVhW3BRHmA+opzQtKUpAkXl97DtPVkszLL1ReyNyv3A=
+node_js: '6'
 addons:
-  firefox: '46.0'
+  firefox: latest
   apt:
     sources:
-    - google-chrome
+      - google-chrome
     packages:
-    - google-chrome-stable
-  sauce_connect: true
+      - google-chrome-stable
 script:
-- xvfb-run wct
-- if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then wct -s 'default'; fi
+  - xvfb-run wct
+  - 'if [ "${TRAVIS_PULL_REQUEST}" = "false" ]; then wct -s ''default''; fi'
 dist: trusty