Bug 1000722 - Many B2G reftests fail after enabling OOP, because partial drawWindow calls are drawing too small an area. r=dbaron
Bug 1000722 - Rollback close reftest in bug 981477. r=ahal
Bug 951654 - Fix unable to locate element box0 intermittently. r=automatedtester

Set search timeout to 30 seconds so that box0 could have enough time to
appear. The original timeout 3 seconds might be too short when try
servers have heavy loading.
Bug 998916 - check the visibility change event to defer the webgl context restore. r=jgilbert,smaug