Reenable libpr0n reftests, and try increasing the reftest timeout from 30 to 45 seconds. (bug 425987)

layout/reftests/reftest.list

@@ -6,8 +6,7 @@
 include reftest-sanity/reftest.list
 
 #images
-# Temporarily disable to try and figure out cause of failures (bug 425987).
-#include ../../modules/libpr0n/test/reftest/reftest.list
+include ../../modules/libpr0n/test/reftest/reftest.list
 
 # printing
 include printing/reftest.list

layout/tools/reftest/reftest.js

@@ -51,7 +51,7 @@ const NS_SCRIPTSECURITYMANAGER_CONTRACTID =
 const NS_REFTESTHELPER_CONTRACTID =
           "@mozilla.org/reftest-helper;1";
 
-const LOAD_FAILURE_TIMEOUT = 30000; // ms
+const LOAD_FAILURE_TIMEOUT = 45000; // ms
 
 var gBrowser;
 var gCanvas1, gCanvas2;