EME: close() should return a resolved promise if session already closed

EME: close() should return a resolved promise if session already closed

BUG=690664
TEST=new test passes

Review-Url: https://codereview.chromium.org/2688263002
Cr-Commit-Position: refs/heads/master@{#449804}
Committed: https://chromium.googlesource.com/chromium/src/+/665c048b2e508b5cc566810816a77bfd4bfdb9db

[jrummell, 2017-02-10 21:03:42]

jrummell@chromium.org changed reviewers:
+ xhwang@chromium.org

[jrummell, 2017-02-10 21:03:43]

PTAL.

[xhwang, 2017-02-10 21:22:22]

LGTM

Please also get blink owner's approval.

[jrummell, 2017-02-10 21:43:21]

Thanks for the review. Fix was suggested in the bug.

[jrummell, 2017-02-10 21:43:25]

The CQ bit was checked by jrummell@chromium.org

[commit-bot: I haz the power, 2017-02-10 21:44:14]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-02-11 00:25:29]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1486763005717790, "parent_rev":
"5d69ef86d128ef832cb680fc83b9595c8d4e0003", "commit_rev":
"665c048b2e508b5cc566810816a77bfd4bfdb9db"}

[commit-bot: I haz the power, 2017-02-11 00:26:03]

Description was changed from

==========
EME: close() should return a resolved promise if session already closed

BUG=690664
TEST=new test passes
==========

to

==========
EME: close() should return a resolved promise if session already closed

BUG=690664
TEST=new test passes

Review-Url: https://codereview.chromium.org/2688263002
Cr-Commit-Position: refs/heads/master@{#449804}
Committed:
https://chromium.googlesource.com/chromium/src/+/665c048b2e508b5cc566810816a7...
==========

[commit-bot: I haz the power, 2017-02-11 00:26:04]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/665c048b2e508b5cc566810816a7...