ci: install chrome on linux

Currently CI is failing because chrome-driver 2.2.9 does not suppport the default chrome present in Travis' linux Trusty images.

This PR makes Travis install Chrome proper.

Author: filipesilva

.travis.yml

@@ -45,10 +45,17 @@ matrix:
       env: NODE_SCRIPT=tests/run_e2e.js
 
 before_install:
+  # Use a virtual display.
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export DISPLAY=:99.0; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sh -e /etc/init.d/xvfb start; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CHROME_BIN=chromium-browser; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then echo "--no-sandbox" > ~/.config/chromium-flags.conf; fi
+  # Install latest chrome.
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CHROME_BIN=/usr/bin/google-chrome; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get update; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -y libappindicator1 fonts-liberation; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo dpkg -i google-chrome*.deb; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then echo "--no-sandbox" > ~/.config/chrome-flags.conf; fi
+  # Install yarn.
   - curl -o- -L https://yarnpkg.com/install.sh | bash
   - export PATH="$HOME/.yarn/bin:$PATH"
   - yarn config set spin false