Add more scripts for per-script font preferences.

chrome/common/extensions/api/experimental.fontSettings.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "experimental.fontSettings",
     "types": [
       {
         "id": "FontName",
@@ skipping 16 matching lines @@
         "name": "getFontName",
         "type": "function",
         "description": "Gets the font name of the current setting for a given script and generic font family.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "properties": {
               "script": {
                 "type": "string",
-                "enum": ["Arab", "Hang", "Hans", "Hant", "Hrkt"],
+                "enum": [
+                    "Arab", "Armn", "Beng", "Cans", "Cher", "Cyrl", "Deva", "Ethi", "Geor",
+                    "Grek", "Gujr", "Guru", "Hang", "Hans", "Hant", "Hebr", "Hrkt", "Knda",
+                    "Khmr", "Laoo", "Mlym", "Mong", "Mymr", "Orya", "Sinh", "Taml", "Telu",
+                    "Thaa", "Thai", "Tibt", "Yiii"
+                ],
                 "description": "The ISO 15924 script code for which the font setting should be retrieved. If omitted, the global script font setting is retrieved.",
                 "optional": true
               },
               "genericFamily": {
                 "type": "string",
                 "enum": ["standard", "sansserif", "serif", "fixed", "cursive", "fantasy"],
                 "description": "The CSS generic font family for which the font setting should be retrieved."
               }
             }
           },
@@ skipping 20 matching lines @@
         "name": "setFontName",
         "type": "function",
         "description": "Sets the font name of the current setting for a given script and generic font family.",
         "parameters": [
           {
             "name": "details",
             "type": "object",
             "properties": {
               "script": {
                 "type": "string",
-                "enum": ["Arab", "Hang", "Hans", "Hant", "Hrkt"],
+                "enum": [
+                    "Arab", "Armn", "Beng", "Cans", "Cher", "Cyrl", "Deva", "Ethi", "Geor",
+                    "Grek", "Gujr", "Guru", "Hang", "Hans", "Hant", "Hebr", "Hrkt", "Knda",
+                    "Khmr", "Laoo", "Mlym", "Mong", "Mymr", "Orya", "Sinh", "Taml", "Telu",
+                    "Thaa", "Thai", "Tibt", "Yiii"
+                ],
                 "description": "The ISO 15924 script code for which the font setting should be set. If omitted, the global script font setting is set.",
                 "optional": true
               },
               "genericFamily": {
                 "type": "string",
                 "enum": ["standard", "sansserif", "serif", "fixed", "cursive", "fantasy"],
                 "description": "The CSS generic font family for which the font setting should be set."
               },
               "fontName": {
                 "type": "string",
@@ skipping 23 matching lines @@
                 "type": "array",
                 "items": { "$ref": "FontName" }
               }
             ]
           }
         ]
       }
     ]
   }
 ]