try the solution by @MrOrz from karma-runner/karma#1144 to run Chrome…

… on Travis

.travis.yml

@@ -4,5 +4,15 @@ node_js:
     - "0.10"
     - "iojs"
     - "iojs-v1.0.4"
-before_script:
-    - "make test-deps"
+script: make test
+before_script: make test-deps
+
+# Google Chrome
+#
+# https://github.com/travis-ci/travis-ci/issues/272#issuecomment-14402117
+# http://stackoverflow.com/questions/19255976/how-to-make-travis-execute-angular-tests-on-chrome-please-set-env-variable-chr
+#
+before_install:
+  - export CHROME_BIN=chromium-browser
+  - export DISPLAY=:99.0
+  - sh -e /etc/init.d/xvfb start

spec/karma.conf.js

@@ -2,7 +2,7 @@
 // Generated on Sat Jun 20 2015 01:21:00 GMT+0200 (CEST)
 
 module.exports = function(config) {
-  config.set({
+  var options = {
 
     // base path that will be used to resolve all patterns (eg. files, exclude)
     basePath: '..',
@@ -61,9 +61,27 @@ module.exports = function(config) {
     // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
     browsers: ['Chrome'],
 
+    customLaunchers: {
+      'Chrome_travis_ci': {
+        base: 'Chrome',
+        flags: ['--no-sandbox']
+      }
+    },
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
     singleRun: false
   });
+
+  if (process.env.TRAVIS) {
+    options.browsers = ['Chrome_travis_ci'];
+    // configuration.reporters = configuration.reporters.concat(['coverage', 'coveralls']);
+    // configuration.coverageReporter = {
+    //   type : 'lcovonly',
+    //   dir : 'coverage/'
+    // };
+  }
+
+  config.set(options);
+
 };