Update Polymer components.

third_party/polymer/components/paper-button/.travis.yml

Index: third_party/polymer/components/paper-button/.travis.yml
diff --git a/third_party/polymer/components/paper-button/.travis.yml b/third_party/polymer/components/paper-button/.travis.yml
index 24e1389dc2a8edafc1a8f45d8af9f55d0e539836..31bce27d6cf731531648cc788f270cbe48ccc279 100644
--- a/third_party/polymer/components/paper-button/.travis.yml
+++ b/third_party/polymer/components/paper-button/.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: YhRb8f1f4y3Rjs5wnp4sCzIcEcL07HOBoJcEp6U/KVgIIk/sBxkxMVmZsoUeABrNbKcdE6Gn6OS2K1lFq4VThKppJ0yjvESa1p0FjmQ0Nf1xCYxc46n936xj87khZy3rrTGHxwcOY5vAa5mvNzXI4BYxjmSjmqRsQwsJBsJHWVw=
-  - secure: eQjSTRxQKF5vyRa6yK2o+j5xWK480hHCKDh7RJQISEVhyzAaCzPZNmWf2pmaDj+ZoZZrahBcoRwOZAiVdHDaKQ+VLHbEECzV3OVV32/9DHi608BPCBdxVR2MDTtZVt3fGVhPQwCnFhwRTWtVVGx8y8HnTDMv/r4xW1OMSThPsbM=
-node_js: stable
+    - secure: >-
+        YhRb8f1f4y3Rjs5wnp4sCzIcEcL07HOBoJcEp6U/KVgIIk/sBxkxMVmZsoUeABrNbKcdE6Gn6OS2K1lFq4VThKppJ0yjvESa1p0FjmQ0Nf1xCYxc46n936xj87khZy3rrTGHxwcOY5vAa5mvNzXI4BYxjmSjmqRsQwsJBsJHWVw=
+    - secure: >-
+        eQjSTRxQKF5vyRa6yK2o+j5xWK480hHCKDh7RJQISEVhyzAaCzPZNmWf2pmaDj+ZoZZrahBcoRwOZAiVdHDaKQ+VLHbEECzV3OVV32/9DHi608BPCBdxVR2MDTtZVt3fGVhPQwCnFhwRTWtVVGx8y8HnTDMv/r4xW1OMSThPsbM=
+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