Issue 5028 - Use browser namespace

lib/prefs.js

Index: lib/prefs.js
===================================================================
--- a/lib/prefs.js
+++ b/lib/prefs.js
@@ -314,25 +314,25 @@
         overrides[keyToPref(key)] = items[key];
 
       resolve();
     });
   });
 
   let managedLoaded = new Promise(resolve =>
   {
-    if (require("info").platform == "chromium" && "managed" in chrome.storage)
+    if (require("info").platform == "chromium" && "managed" in browser.storage)
     {
-      chrome.storage.managed.get(null, items =>
+      browser.storage.managed.get(null, items =>
       {
-        // Opera doesn't support chrome.storage.managed, but instead simply
-        // removing the API, Opera sets chrome.runtime.lastError when using it.
+        // Opera doesn't support browser.storage.managed, but instead simply
+        // removing the API, Opera sets browser.runtime.lastError when using it.
         // So we have to retrieve that error, to prevent it from showing up
         // in the console.
-        chrome.runtime.lastError;
+        browser.runtime.lastError;
 
         for (let key in items)
           defaults[key] = items[key];
 
         resolve();
       });
     }
     else