Backed out changeset 89f98c8c01d4 (bug 1748506) as per whimboo's request.

netwerk/base/nsNetUtil.cpp

@@ -3381,13 +3381,6 @@ void CheckForBrokenChromeURL(nsILoadInfo* aLoadInfo, nsIURI* aURI) {
     return;
   }
 
-#ifdef ANDROID
-  // See bug 1748506
-  if (StringEndsWith(filePath, "/built_in_addons.json"_ns)) {
-    return;
-  }
-#endif
-
   // Ignore fetches/xhrs, as they are frequently used in a way where
   // non-existence is OK (ie with fallbacks). This risks false negatives (ie
   // files that *should* be there but aren't) - which we accept for now.