FIXME: Disable desktopCapturer tests

spec/api-desktop-capturer-spec.js

@@ -4,7 +4,9 @@ const features = process.atomBinding('features')
 
 const isCI = remote.getGlobal('isCi')
 
-describe('desktopCapturer', () => {
+// FIXME(alexeykuzmin): Crashes the app.
+// Fix the crash and enable the tests.
+xdescribe('desktopCapturer', () => {
   before(function () {
     if (!features.isDesktopCapturerEnabled()) {
       // It's been disabled during build time.