Remove `window.performance` use.
Remove `window.performance` use.

halcyonandon/benchmark.js,polymaths/benchmark.js,polymaths/benchmark.js,jayphelps/benchmark.js,polymaths/benchmark.js,rasata/benchmark.js,polymaths/benchmark.js,jayphelps/benchmark.js,KillerDesigner/benchmark.js,rasata/benchmark.js,halcyonandon/benchmark.js,halcyonandon/benchmark.js,halcyonandon/benchmark.js,KillerDesigner/benchmark.js,dragthor/benchmark.js,rasata/benchmark.js,dragthor/benchmark.js,jayphelps/benchmark.js,dragthor/benchmark.js,KillerDesigner/benchmark.js,jayphelps/benchmark.js,rasata/benchmark.js,dragthor/benchmark.js,KillerDesigner/benchmark.js