title: What kinds of icons do Chrome Extensions support?
body: <p>Trying to make a Firefox WebExtension work in Chrome, I realized that Chrome's icon support must differ. I have been using a multiresolution icon that contains the icon in 16x16, 32x32, 48x48, 64x64, 128x128 and 256x256, which seemed to work in Firefox without any errors. In Chrome I get errors that the icon is not supported...<br>
  Is it possible that my format is corrupt or does Chrome simply not support multiresolution icons?<br>
  Do I really have to create individual files for every resolution?</p>