Mac: fix screen capture freezes when context menu popup in Chrome.

Mac: fix screen capture freezes when context menu popup in Chrome.

Previously we grab a run loop source and add a source with mode
kCFRunLoopDefaultMode. With this mode, it won't callback when context menu popup
(which needs the NSEventTrackingRunLoopMode), then screen capture can't get
refreshed frame with context menu until the context menu is gone.
The fix is to use kCFRunLoopComonModes, which includes default,modal and event
tracking modes by default.

BUG=chromium:697780
Review-Url: https://codereview.webrtc.org/2732393003
Cr-Commit-Position: refs/heads/master@{#17171}
Committed: https://chromium.googlesource.com/external/webrtc/+/95b27217f204e9985e2c070abddc4aff4c8d7d35

[braveyao1, 2017-03-08 19:51:25]

The CQ bit was checked by braveyao@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-08 19:51:35]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[commit-bot: I haz the power, 2017-03-08 20:15:56]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-08 20:15:57]

Dry run: This issue passed the CQ dry run.

[braveyao1, 2017-03-08 20:19:33]

braveyao@webrtc.org changed reviewers:
+ sergeyu@chromium.org

[braveyao1, 2017-03-08 20:19:33]

Hi sergeyu@, please take a look.

[braveyao1, 2017-03-09 18:19:54]

The CQ bit was checked by braveyao@webrtc.org to run a CQ dry run

[commit-bot: I haz the power, 2017-03-09 18:20:05]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.webrtc.org/...

[braveyao1, 2017-03-09 18:32:12]

Patchset #1 (id:1) has been deleted

[commit-bot: I haz the power, 2017-03-09 18:40:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-09 18:40:12]

Dry run: This issue passed the CQ dry run.

[Sergey Ulanov, 2017-03-10 01:13:23]

LGTM
+erikchen in CC, FYI

[erikchen, 2017-03-10 01:17:40]

erikchen@chromium.org changed reviewers:
+ erikchen@chromium.org

[erikchen, 2017-03-10 01:17:40]

lgtm

[braveyao1, 2017-03-10 17:44:33]

The CQ bit was checked by braveyao@webrtc.org

[commit-bot: I haz the power, 2017-03-10 17:44:38]

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

[commit-bot: I haz the power, 2017-03-10 17:46:50]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1489167873514790,
"parent_rev": "0b942150d35c58bab4efe6dc389489e01f3126a8", "commit_rev":
"95b27217f204e9985e2c070abddc4aff4c8d7d35"}

[commit-bot: I haz the power, 2017-03-10 17:46:52]

Description was changed from

==========
Mac: fix screen capture freezes when context menu popup in Chrome.

Previously we grab a run loop source and add a source with mode
kCFRunLoopDefaultMode. With this mode, it won't callback when context menu popup
(which needs the NSEventTrackingRunLoopMode), then screen capture can't get
refreshed frame with context menu until the context menu is gone.
The fix is to use kCFRunLoopComonModes, which includes default,modal and event
tracking modes by default.

BUG=chromium:697780
==========

to

==========
Mac: fix screen capture freezes when context menu popup in Chrome.

Previously we grab a run loop source and add a source with mode
kCFRunLoopDefaultMode. With this mode, it won't callback when context menu popup
(which needs the NSEventTrackingRunLoopMode), then screen capture can't get
refreshed frame with context menu until the context menu is gone.
The fix is to use kCFRunLoopComonModes, which includes default,modal and event
tracking modes by default.

BUG=chromium:697780

Review-Url: https://codereview.webrtc.org/2732393003
Cr-Commit-Position: refs/heads/master@{#17171}
Committed:
https://chromium.googlesource.com/external/webrtc/+/95b27217f204e9985e2c070ab...
==========

[commit-bot: I haz the power, 2017-03-10 17:46:54]

Committed patchset #1 (id:20001) as
https://chromium.googlesource.com/external/webrtc/+/95b27217f204e9985e2c070ab...