old_contents: var gulp = require('gulp');
  var stripCssComments = require('gulp-strip-css-comments');
  var insert = require('gulp-insert');
  var rename = require("gulp-rename");
  var concat = require("gulp-concat");
  var del = require('del');
  
  gulp.task('noComments', function () {
      return gulp.src('style.css')
          .pipe(stripCssComments())
          .pipe(gulp.dest('temp'));
  });
  
  gulp.task('parameters', ['noComments'], function () {
      return gulp.src(['parameters.css', './temp/style.css'])
          .pipe(concat('dist-style.css'))
          .pipe(gulp.dest('dist'));
  });
  
  gulp.task('wrap', ['parameters'], function () {
      return gulp.src('./dist/dist-style.css')
          .pipe(insert.wrap('@-moz-document domain("mstr.my.salesforce.com") { \n\n', '\n}'))
          .pipe(rename('userstyle.css'))
          .pipe(gulp.dest('dist'));
  });
  
  gulp.task('clean', ['wrap'], function () {
      return del([
          './temp'
      ]);
  });
  
  
  gulp.task('default', ['clean']);
  
  
new_contents: var gulp = require('gulp');
  var stripCssComments = require('gulp-strip-css-comments');
  var insert = require('gulp-insert');
  var rename = require("gulp-rename");
  var concat = require("gulp-concat");
  var del = require('del');
  
  gulp.task('no-comments', function () {
      return gulp.src('style.css')
          .pipe(stripCssComments())
          .pipe(gulp.dest('temp'));
  });
  
  gulp.task('parameters', ['no-comments'], function () {
      return gulp.src(['parameters.css', './temp/style.css'])
          .pipe(concat('dist-style.css'))
          .pipe(gulp.dest('dist'));
  });
  
  gulp.task('wrap', ['parameters'], function () {
      return gulp.src('./dist/dist-style.css')
          .pipe(insert.wrap('@-moz-document domain("mstr.my.salesforce.com") { \n\n', '\n}'))
          .pipe(rename('userstyle.css'))
          .pipe(gulp.dest('dist'));
  });
  
  gulp.task('clean', ['wrap'], function () {
      return del([
          './temp'
      ]);
  });
  
  
  gulp.task('default', ['clean']);
  
  
subject: Rename noComments to no-comments