Fix racing which may pause gpu process's interface registry forever

Fix racing which may pause gpu process's interface registry forever

AcceptConnection and OnInitialize are racing. Only pause the interface
registry if OnInitialize is not invoked.

TEST=arc video playback well
BUG=620845
Committed: https://crrev.com/baef2ce0540b155429c40995bd88000bb9b6487f
Cr-Commit-Position: refs/heads/master@{#403185}

[kcwu, 2016-06-30 10:36:21]

kcwu@chromium.org changed reviewers:
+ ben@chromium.org, rockot@chromium.org

[kcwu, 2016-06-30 10:37:43]

This fixes issue introduced by https://codereview.chromium.org/2108343002.
PTAL, thanks.

[Ken Rockot(use gerrit already), 2016-06-30 13:22:51]

Thanks, lgtm

[Owen Lin, 2016-06-30 14:54:44]

The CQ bit was checked by owenlin@chromium.org

[commit-bot: I haz the power, 2016-06-30 14:55:00]

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

[Ben Goodger (Google), 2016-06-30 14:59:00]

lgtm

[Owen Lin, 2016-06-30 15:36:38]

The CQ bit was unchecked by owenlin@chromium.org

[Owen Lin, 2016-06-30 15:36:44]

The CQ bit was checked by owenlin@chromium.org

[commit-bot: I haz the power, 2016-06-30 15:36:48]

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, 2016-06-30 15:41:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-30 15:41:23]

CQ bit was unchecked.

[commit-bot: I haz the power, 2016-06-30 15:44:28]

Description was changed from

==========
Fix racing which may pause gpu process's interface registry forever

AcceptConnection and OnInitialize are racing. Only pause the interface
registry if OnInitialize is not invoked.

TEST=arc video playback well
BUG=620845
==========

to

==========
Fix racing which may pause gpu process's interface registry forever

AcceptConnection and OnInitialize are racing. Only pause the interface
registry if OnInitialize is not invoked.

TEST=arc video playback well
BUG=620845

Committed: https://crrev.com/baef2ce0540b155429c40995bd88000bb9b6487f
Cr-Commit-Position: refs/heads/master@{#403185}
==========

[commit-bot: I haz the power, 2016-06-30 15:44:29]

Patchset 1 (id:??) landed as
https://crrev.com/baef2ce0540b155429c40995bd88000bb9b6487f
Cr-Commit-Position: refs/heads/master@{#403185}