Bug 1241668: Disable dom.ipc.plugins.asyncInit.enabled unconditionally; r=bsmedberg

--HG--
extra : rebase_source : 0aaf2b5c040f2c78ec76afb87b821c8c7cfd4bef

modules/libpref/init/all.js

@@ -2617,13 +2617,8 @@ pref("dom.ipc.plugins.reportCrashURL", true);
 // Defaults to 30 seconds.
 pref("dom.ipc.plugins.unloadTimeoutSecs", 30);
 
-// Asynchronous plugin initialization should only be enabled on non-e10s
-// channels until some remaining bugs are resolved.
-#ifdef E10S_TESTING_ONLY
+// Asynchronous plugin initialization is on hold.
 pref("dom.ipc.plugins.asyncInit.enabled", false);
-#else
-pref("dom.ipc.plugins.asyncInit.enabled", true);
-#endif
 
 // Allow the AsyncDrawing mode to be used for plugins.
 pref("dom.ipc.plugins.asyncdrawing.enabled", true);