build(travis): use latest google chrome

.travis.yml

@@ -8,9 +8,12 @@ addons:
   firefox: "latest"
 
 before_install:
-  - export CHROME_BIN=chromium-browser
+  - export CHROME_BIN=/usr/bin/google-chrome
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
+  - sudo apt-get install -y libappindicator1 fonts-liberation
+  - wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
+  - sudo dpkg -i google-chrome*.deb
 
 after_script:
   - npm run coverage