Issue 5028 - Use browser namespace

lib/whitelisting.js

Index: lib/whitelisting.js
===================================================================
--- a/lib/whitelisting.js
+++ b/lib/whitelisting.js
@@ -128,17 +128,17 @@
   FilterNotifier.emit(
     "page.WhitelistingStateRevalidate",
     page, checkWhitelisted(page)
   );
 }
 
 FilterNotifier.on("filter.behaviorChanged", () =>
 {
-  chrome.tabs.query({}, tabs =>
+  browser.tabs.query({}, tabs =>
   {
     for (let tab of tabs)
       revalidateWhitelistingState(new ext.Page(tab));
   });
 });
 
 ext.pages.onLoading.addListener(revalidateWhitelistingState);
 
@@ -216,19 +216,19 @@
       {
         recordKey(key, page, url);
         break;
       }
     }
   }
 }
 
-if (typeof chrome == "object")
+if (typeof browser == "object")
 {
-  chrome.webRequest.onHeadersReceived.addListener(
+  browser.webRequest.onHeadersReceived.addListener(
     onHeadersReceived,
     {
       urls: ["http://*/*", "https://*/*"],
       types: ["main_frame", "sub_frame"]
     },
     ["responseHeaders"]
   );
 }