Croscore fonts
The ChromeOS core fonts, also known as the Croscore fonts, are a collection of three TrueType font families: Arimo (sans-serif), Tinos (serif) and Cousine (monospace). These fonts are metrically compatible with Monotype Corporation's Arial, Times New Roman, and Courier New, the most commonly used fonts on Microsoft Windows, for which they are intended as open-source substitutes.