chromium should use util

lib/darwin/chromium.js

@@ -1,32 +1,6 @@
 var util = require('./util'),
-    currentPath;
+    CHROMIUM_ID = 'org.chromium.Chromium',
+    CHROMIUM_VERSION = 'CFBundleShortVersionString';
 
-function getPath(callback) {
-    if (currentPath) {
-        return callback(null, currentPath);
-    }
-
-    util.find('org.chromium.Chromium', function (err, path) {
-        currentPath = path;
-        callback(err, currentPath);
-    });
-}
-
-function getVersion(callback) {
-    getPath(function (err, path) {
-        if (err) {
-            return callback(err, null);
-        }
-
-        util.parse(util.getInfoPath(path), function (err, data) {
-            if (err) {
-                return callback(err, null);
-            }
-
-            callback(null, data['CFBundleShortVersionString']);
-        });
-    });
-}
-
-exports.path = getPath;
-exports.version = getVersion;
+exports.path = util.find.bind(null, CHROMIUM_ID);
+exports.version = util.getInfoKey.bind(null, CHROMIUM_ID, CHROMIUM_VERSION);