commit 78274dc0686b5bb494c00923dc6f9bd8fd1daa74
author Han Leon <leon.han@intel.com> Tue Jun 27 08:36:30 2017
committer Commit Bot <commit-bot@chromium.org> Wed Jun 28 07:04:29 2017
tree e9352bfcac17c46b668148ae1173af46569f8150
parent afa076bcf93368cfd37ca5fa972ce2537eaa1cc7

[ServiceWorker] Clear controller attribute of ServiceWorkerContainer in time

This CL fixes the wpt test controller-on-disconnect.https.html by
clearing controller attribute of ServiceWorkerContainer when the
execution context is destroyed.

BUG=678905
TEST=blink_tests
external/wpt/service-workers/service-worker/controller-on-disconnect.https.html

Change-Id: I5e8250ae2a90f2fb28b127347340ea430b0ea5a6
Reviewed-on: https://chromium-review.googlesource.com/549587
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Commit-Queue: Han Leon <leon.han@intel.com>
Cr-Commit-Position: refs/heads/master@{#482908}