gecko-dev/layout/analysis/pixel-conversion.js

include("simple-match.js");

var patterns = {CSSPixelsToDevPixels: ['AppUnitsToDevPixels', 'CSSPixelsToAppUnits'],
                DevPixelsToIntCSSPixels: ['AppUnitsToIntCSSPixels', 'DevPixelsToAppUnits'],
                DevPixelsToFloatCSSPixels: ['AppUnitsToFloatCSSPixels', 'DevPixelsToAppUnits'],
               };