Re: [IndexedDB-tests][pointerevents-tests][service-workers-tests][uievents-tests][web-animations-tests] Fix the race condition to prevent the access of metadata in both PBackground thread and the Connection thread. (#4419)

Notifying @EvgenyAgafonchikov, @Ms2ger, @NavidZ, @RByers, @Steditor, @Velmont, @bethge, @birtles, @chunywang, @dumbmatter, @inexorabletash, @jacobrossi, @jdm, @plehegar, @scottgonzalez, @staktrace, @wanderview, @yunxiaoxie, @zhaozihao, and @zqzhang. *([Learn how reviewing works](https://github.com/w3c/web-platform-tests/blob/master/README.md#test-review).)*

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4419#issuecomment-270142675

Received on Tuesday, 3 January 2017 15:40:28 UTC