Use browser addons in Travis

.travis.yml

@@ -61,27 +61,23 @@ matrix:
   - elixir: 1.9.1
     otp_release: 22.0.7
     env: WALLABY_DRIVER=selenium
-# Run in bigger container so we don't run out of memory generating the plt
-sudo: required
 cache:
   directories:
     - _build
     - deps
 
 dist: trusty
 
+addons:
+  chrome: stable
+  firefox: latest
+
 before_script:
-  - export DISPLAY=:99.0
-  - sh -e /etc/init.d/xvfb start
   - export CHROMEDRIVER_VERSION=`curl -s http://chromedriver.storage.googleapis.com/LATEST_RELEASE`
   - curl -L -O "http://chromedriver.storage.googleapis.com/${CHROMEDRIVER_VERSION}/chromedriver_linux64.zip"
   - unzip chromedriver_linux64.zip
   - sudo chmod +x chromedriver
   - sudo mv chromedriver /usr/local/bin
-  - sudo add-apt-repository ppa:ubuntu-toolchain-r/test --yes
-  - sudo apt-get update
-  - sudo apt-get --only-upgrade install google-chrome-stable
-  - sudo apt-get install libstdc++6-4.7-dev
   - MIX_ENV=test mix compile --warnings-as-errors
   - if [ -z ${WALLABY_DRIVER} ]; then travis_wait mix dialyzer --plt; fi # only run dialyzer for the env without drivers
   - bash $TRAVIS_BUILD_DIR/test/tools/start_webdriver.sh

test/tools/start_webdriver.sh

@@ -24,13 +24,6 @@ if [ "$WALLABY_DRIVER" = "selenium" ]; then
   curl -L https://github.com/mozilla/geckodriver/releases/download/v0.23.0/geckodriver-v0.23.0-linux64.tar.gz -o $HOME/geckodriver.tar.gz
   tar xfz $HOME/geckodriver.tar.gz -C $HOME/bin
 
-  # Download latest firefox
-  export FIREFOX_SOURCE_URL='https://download.mozilla.org/?product=firefox-latest&lang=en-US&os=linux64'
-  wget -O /tmp/firefox-latest.tar.bz2 $FIREFOX_SOURCE_URL
-  mkdir -p $HOME/firefox-latest
-  tar xf /tmp/firefox-latest.tar.bz2 -C $HOME/firefox-latest
-  export PATH=$HOME/firefox-latest/firefox:$PATH
-
   java -version
 
   nohup java -jar $HOME/selenium.jar &