From 71957144be36df8d3550a78da942de01481fc8eb Mon Sep 17 00:00:00 2001
From: Paul Gschwendtner <paulgschwendtner@gmail.com>
Date: Tue, 16 Jan 2018 15:55:46 +0100
Subject: [PATCH 1/2] build: fix chrome headless not starting

* Applies a workaround for https://github.com/travis-ci/travis-ci/issues/8836 that fixes the Chrome launch issues. (similar workaround applied on angular/angular)
---
 .travis.yml | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 0e29b1fa486d..68bab9d3619e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,14 @@
 language: node_js
-sudo: false
 dist: trusty
 
+# Temporary set sudo to required, because in normal container-based Travis jobs, the Chrome
+# binaries seem to be owned by root, and therefore can't be accessed by Karma. To workaround
+# the issue we temporary grant the CI sudo permissions.
+# https://github.com/travis-ci/travis-ci/issues/8836#issuecomment-356362524.
+sudo: required
+
 node_js:
-  - '8'
+  - '8.9.4'
 
 addons:
   jwt:

From a600c384ce5e1a851815a6d9aa0a490850981d64 Mon Sep 17 00:00:00 2001
From: Paul Gschwendtner <paulgschwendtner@gmail.com>
Date: Tue, 16 Jan 2018 18:50:26 +0100
Subject: [PATCH 2/2] Add comment for node version

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 68bab9d3619e..15000a480297 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,8 @@ dist: trusty
 sudo: required
 
 node_js:
+  # Use the explicit NodeJS LTS version 8.9.4 to avoid any automatic upgrade of the version.
+  # This ensures that all Travis jobs run consistently and don't have different Node versions.
   - '8.9.4'
 
 addons: