Bug 1352204 Update non-MPC extension notification r=andym

MozReview-Commit-ID: E9hqJqySA3v

--HG--
extra : rebase_source : bf916d46ec21cb6594cd48308057291e214b97a6

browser/components/nsBrowserGlue.js

@@ -757,11 +757,14 @@ BrowserGlue.prototype = {
     if (!win)
       return;
 
-    let message = win.gNavigatorBundle.getString("nonMpcDisabled.message");
+    // This is only going to be on Nightly and only for the 55 and 56
+    // cycles, and it points to a wiki page that is not localized, so
+    // no need to localize the message here...
+    let message = "Due to performance testing, we have disabled some of your add-ons. They can be re-enabled in your browser settings.";
     let buttons = [
       {
-        label: win.gNavigatorBundle.getString("nonMpcDisabled.manage.label"),
-        accessKey: win.gNavigatorBundle.getString("nonMpcDisabled.manage.accessKey"),
+        label: "Manage Add-Ons",
+        accessKey: "M",
         callback() {
           win.BrowserOpenAddonsMgr("addons://list/extension");
         }

browser/locales/en-US/chrome/browser/browser.properties

@@ -214,10 +214,6 @@ unsignedAddonsDisabled.message=One or more installed add-ons cannot be verified
 unsignedAddonsDisabled.learnMore.label=Learn More
 unsignedAddonsDisabled.learnMore.accesskey=L
 
-nonMpcDisabled.message=Due to performance testing, we have disabled some of your add-ons. They can be re-enabled in the Add-ons Manager.
-nonMpcDisabled.manage.label=Manage Add-Ons
-nonMpcDisabled.manage.accessKey=M
-
 # LOCALIZATION NOTE (compactLightTheme.name): This is displayed in about:addons -> Appearance
 compactLightTheme.name=Compact Light
 compactLightTheme.description=A compact theme with a light color scheme.