chromium/chrome/test/data/extensions/theme_hidpi/manifest.json

{
   "name" : "HighDPI",
   "key" : "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDh+ndFpTRdmV69ZOwIFiHaPRSij7jDI/010cI1wqxHOZYc9TK5LdWbuPkQV1dGMNhfIltfYfEjcRxHerJKU72RZSyMpGd8Kvw2vnqws9pfjTMBGD9U0J+kNx3S+tawjM1jRkx0+WGSTISTd92hudOdrZcrtjeetixSiQDJu0++MQIDAQAB",
   "version" : "1.0",
   "manifest_version" : 2,
   "theme": {
      "images": {
         "theme_frame" : {
           "100" : "images/100_percent/theme_frame.png",
           "200" : "images/200_percent/theme_frame.png"
         },
         "theme_frame_inactive" : {
           "100" : "images/100_percent/theme_frame_inactive.png",
           "200" : "images/200_percent/theme_frame_inactive.png"
         },
         "theme_frame_incognito" : {
           "100" : "images/100_percent/theme_frame_incognito.png"
         },
         "theme_frame_incognito_inactive" :
           "images/100_percent/theme_frame_incognito_inactive.png",
         "theme_toolbar": {
           "100" : "images/100_percent/theme_toolbar.png",
           "200" : "images/200_percent/theme_toolbar.png"
         }
      }
   }
}