Add per-script font support for all ISO 15924 scripts.

chrome/common/extensions/docs/samples.json

 {
   "api": {
     "chrome.alarms.clear": "alarms.html#method-clear",
     "chrome.alarms.clearAll": "alarms.html#method-clearAll",
     "chrome.alarms.create": "alarms.html#method-create",
     "chrome.alarms.get": "alarms.html#method-get",
     "chrome.alarms.getAll": "alarms.html#method-getAll",
     "chrome.alarms.onAlarm": "alarms.html#event-onAlarm",
     "chrome.appWindow.create": "appWindow.html#method-create",
     "chrome.bookmarks.create": "bookmarks.html#method-create",
@@ skipping 1254 matching lines @@
       "name": "Font Settings",
       "packaged_app": false,
       "path": "examples/api/fontSettings/",
       "protocols": [],
       "search_string": "FONT SETTINGS SAMPLE EXTENSION FOR FONT SETTINGS API BROWSER_ACTION EXPERIMENTAL POPUP CHROME.EXPERIMENTAL.FONTSETTINGS.CLEARDEFAULTFIXEDFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.CLEARDEFAULTFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.CLEARFONT CHROME.EXPERIMENTAL.FONTSETTINGS.CLEARMINIMUMFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.GETDEFAULTFIXEDFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.GETDEFAULTFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.GETFONT CHROME.EXPERIMENTAL.FONTSETTINGS.GETFONTLIST CHROME.EXPERIMENTAL.FONTSETTINGS.GETMINIMUMFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.ONDEFAULTFIXEDFONTSIZECHANGED CHROME.EXPERIMENTAL.FONTSETTINGS.ONDEFAULTFONTSIZECHANGED CHROME.EXPERIMENTAL.FONTSETTINGS.ONFONTCHANGED CHROME.EXPERIMENTAL.FONTSETTINGS.ONMINIMUMFONTSIZECHANGED CHROME.EXPERIMENTAL.FONTSETTINGS.SETDEFAULTFIXEDFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.SETDEFAULTFONTSIZE CHROME.EXPERIMENTAL.FONTSETTINGS.SETFONT CHROME.EXPERIMENTAL.FONTSETTINGS.SETMINIMUMFONTSIZE",
       "source_files": [
         "manifest.json",
         "popup.html",
         "popup.js"
       ],
-      "source_hash": "03a4559814287c59c7126c6b647306713364f078",
+      "source_hash": "1e75a98deadbbe1cb1f2553c62ab706734f443c9",
       "zip_path": "examples/api/fontSettings.zip"
     },
     {
       "api_calls": [
         "chrome.browserAction.onClicked",
         "chrome.browserAction.setBadgeBackgroundColor",
         "chrome.browserAction.setBadgeText",
         "chrome.browserAction.setIcon",
         "chrome.browserAction.setTitle",
         "chrome.extension.getBackgroundPage",
@@ skipping 1505 matching lines @@
         "manifest.json",
         "popup.html",
         "popup.js",
         "sample.css"
       ],
       "source_hash": "8e51dc3a9577065d22ce92f3c838edc5ceaf4e65",
       "zip_path": "examples/api/extension/isAllowedAccess.zip"
     }
   ]
 }