Chromium support for Darwin and Windows

Add support for Chromium for Darwin and Windows platforms
Remove linux chromium binary lookup in Google Chrome
Closes karma-runner#45

index.js

@@ -58,6 +58,50 @@ function getChromeExe(chromeDirName) {
   return windowsChromeDirectory;
 }
 
+var ChromiumBrowser = function(baseBrowserDecorator, args) {
+  baseBrowserDecorator(this);
+
+  var flags = args.flags || [];
+
+  this._getOptions = function(url) {
+    // Chromium CLI options
+    // http://peter.sh/experiments/chromium-command-line-switches/
+    flags.forEach(function(flag, i) {
+      if(isJSFlags(flag)) flags[i] = sanitizeJSFlags(flag);
+    });
+
+    return [
+      '--user-data-dir=' + this._tempDir,
+      '--no-default-browser-check',
+      '--no-first-run',
+      '--disable-default-apps',
+      '--disable-popup-blocking',
+      '--disable-translate'
+    ].concat(flags, [url]);
+  };
+};
+
+// Return location of Chromium's chrome.exe file.
+function getChromiumExe(chromeDirName) {
+  // Only run these checks on win32
+  if (process.platform !== 'win32') {
+    return null;
+  }
+  var windowsChromiumDirectory, i, prefix;
+  var suffix = '\\Chromium\\Application\\chrome.exe';
+  var prefixes = [process.env.LOCALAPPDATA, process.env.PROGRAMFILES, process.env['PROGRAMFILES(X86)']];
+
+  for (i = 0; i < prefixes.length; i++) {
+    prefix = prefixes[i];
+    if (fs.existsSync(prefix + suffix)) {
+      windowsChromiumDirectory = prefix + suffix;
+      break;
+    }
+  }
+
+  return windowsChromiumDirectory;
+}
+
 function getBin(commands) {
   // Don't run these checks on win32
   if (process.platform !== 'linux') {
@@ -79,9 +123,7 @@ ChromeBrowser.prototype = {
   name: 'Chrome',
 
   DEFAULT_CMD: {
-    // Try chromium-browser before chromium to avoid conflict with the legacy
-    // chromium-bsu package previously known as 'chromium' in Debian and Ubuntu.
-    linux: getBin(['chromium-browser', 'chromium', 'google-chrome', 'google-chrome-stable']),
+    linux: getBin(['google-chrome', 'google-chrome-stable']),
     darwin: '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
     win32: getChromeExe('Chrome')
   },
@@ -128,6 +170,21 @@ ChromeCanaryBrowser.prototype = {
 
 ChromeCanaryBrowser.$inject = ['baseBrowserDecorator', 'args'];
 
+ChromiumBrowser.prototype = {
+  name: 'Chromium',
+
+  DEFAULT_CMD: {
+    // Try chromium-browser before chromium to avoid conflict with the legacy
+    // chromium-bsu package previously known as 'chromium' in Debian and Ubuntu.
+    linux: getBin(['chromium-browser', 'chromium']),
+    darwin: '/Applications/Chromium.app/Contents/MacOS/Chromium',
+    win32: getChromiumExe()
+  },
+  ENV_CMD: 'CHROMIUM_BIN'
+};
+
+ChromiumBrowser.$inject = ['baseBrowserDecorator', 'args'];
+
 var DartiumBrowser = function(baseBrowserDecorator, args) {
     ChromeBrowser.call(this, baseBrowserDecorator, args);
 
@@ -153,11 +210,12 @@ DartiumBrowser.$inject = ['baseBrowserDecorator', 'args'];
 module.exports = {
   'launcher:Chrome': ['type', ChromeBrowser],
   'launcher:ChromeCanary': ['type', ChromeCanaryBrowser],
+  'launcher:Chromium': ['type', ChromiumBrowser],
   'launcher:Dartium': ['type', DartiumBrowser]
 };
 
 module.exports.test = {
   isJSFlags: isJSFlags,
   sanitizeJSFlags: sanitizeJSFlags,
   canaryGetOptions: canaryGetOptions
-}
+}