Issue 1488 - Add pre-configurable preference to suppress first run page

lib/prefs.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 22 matching lines @@
 defaults.subscriptions_exceptionsurl = "https://easylist-downloads.adblockplus.org/exceptionrules.txt";
 defaults.subscriptions_antiadblockurl = "https://easylist-downloads.adblockplus.org/antiadblockfilters.txt";
 defaults.documentation_link = "https://adblockplus.org/redirect?link=%LINK%&lang=%LANG%";
 defaults.notificationdata = {};
 defaults.notificationurl = "https://notification.adblockplus.org/notification.json";
 defaults.stats_total = {};
 defaults.show_statsinicon = true;
 defaults.show_statsinpopup = true;
 defaults.shouldShowBlockElementMenu = true;
 defaults.hidePlaceholders = true;
+defaults.suppress_first_run_page = false;
 
 let Prefs = exports.Prefs = {
   onChanged: new ext._EventTarget(),
   onLoaded: new ext._EventTarget()
 };
 
 function keyToPref(key)
 {
   if (key.indexOf(keyPrefix) != 0)
     return null;
@@ skipping 33 matching lines @@
     },
     enumerable: true
   });
 }
 
 function init()
 {
   let prefs = Object.keys(defaults);
   prefs.forEach(addPreference);
 
+  let localLoaded = false;
+  let managedLoaded = false;
+
   // Migrate preferences for users updating from old versions.
   // TODO: Remove the migration code after a few releases.
   ext.storage.migratePrefs({
     map: function(key, value)
     {
       if (key in defaults)
       {
         if (key != "currentVersion")
         {
           try
@@ skipping 30 matching lines @@
               if ("newValue" in change && change.newValue != defaults[pref])
                 overrides[pref] = change.newValue;
               else
                 delete overrides[pref];
 
               Prefs.onChanged._dispatch(pref);
             }
           }
         });
 
-        Prefs.onLoaded._dispatch();
+        localLoaded = true;
+        if (localLoaded && managedLoaded)
+          Prefs.onLoaded._dispatch();
       });
     }
   });
+
+  if (require("info").platform == "chromium" && "managed" in chrome.storage)
+  {
+    chrome.storage.managed.get(null, function(items)
+    {
+      for (let key in items)
+        defaults[key] = items[key];
+
+      managedLoaded = true;
+      if (localLoaded && managedLoaded)
+        Prefs.onLoaded._dispatch();
+    });
+  }
+  else
+  {
+    managedLoaded = true;
+  }
 }
 
 init();