d62a6a94a4
If a file contains more than 500 lines on either side defer syntax highlighting by 250 milliseconds. This gives the browser a chance to get the file opened and visible on screen before the active mode starts chugging through the text building up the DOM. Users see the file appear, and then CM3 highlights the visible region and colors fill in slightly later. This gives the UI a slightly more responsive feeling while still offering users the syntax highlighting they want visible. Change-Id: I86307406b93690d864e9fa652b19157667a75a82