Makes the default French keyboard as fr(oss) XKB layout.

chrome/browser/resources/chromeos/input_method/google_xkb_manifest.json

 {
   "name": "Chrome OS XKB",
   "version": "1.0.5.0",
   "description": "Chrome OS XKB",
   "default_locale": "en",
   "incognito": "split",
   "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC7C0oB6YTnf69uhWnVTZl5TB/psHrJXgIPLYchFb0whlVCG8fqMo9lW/oxBmZXZ3N8T7zZrdYI/SUjoc9I5R/dMVVD2q4iKox+x7xlTbqSdVeOb6b9ZVJ24pLbO1L7feSNSBgR0t61jrC2eY/gf78h7w58UEQBPFT2mUxhhwodyQIDAQAB",
   "permissions": [
     "accessibilityFeatures.read",
     "app.window.alpha",
@@ skipping 213 matching lines @@
     {
       "name": "__MSG_keyboard_french__",
       "type": "ime",
       "id": "xkb:fr::fra",
       "description": "",
       "language": [
         "fr",
         "fr-FR"
       ],
       "layouts": [
-        "fr"
+        "fr(oss)"
       ],
       "input_view": "inputview.html#id=fr.compact.qwerty&language=fr&passwordLayout=fr.compact.qwerty&name=keyboard_french",
       "options_page": "hmm_options.html?code=xkb:fr::fra"
     },
     {
       "name": "__MSG_keyboard_french_bepo__",
       "type": "ime",
       "id": "xkb:fr:bepo:fra",
       "description": "",
       "language": [
@@ skipping 779 matching lines @@
       ],
       "layouts": [
         "mk"
       ],
       "input_view": "inputview.html#id=mk&language=mk&passwordLayout=us-ltr&name=keyboard_macedonian",
       "options_page": "hmm_options.html?code=xkb:mk::mkd"
     }
   ],
   "manifest_version": 2
 }