Backed out changeset 5223ac33f4b4 (bug 1377036) for failing browser-chrome tests, e.g. browser_CTP_notificationBar.js. r=backout

browser/app/profile/firefox.js

@@ -679,7 +679,7 @@ pref("plugins.click_to_play", true);
 pref("plugins.testmode", false);
 
 // Should plugins that are hidden show the infobar UI?
-pref("plugins.show_infobar", false);
+pref("plugins.show_infobar", true);
 
 // Should dismissing the hidden plugin infobar suppress it permanently?
 pref("plugins.remember_infobar_dismissal", true);