Able to reproduce the issue on 55.0.2858.0/8799.0.0 Gnawty. 

Seems unlikely this is an extensions platform issue. 

as per bug opener, issue happens when make hangout video call. give to WebRTC team

srcv@: can you confirm this behavior?

sc00335628@techmahindra.com: I'm not sure we can entirely blame Chrome for the regression. It might also be that the Web Platform APIs or behavior has changed since M53 so they extension needs to be updated. Are you able to produce any more detailed logs that showcases why the "video call gets stuck and weird traces of video is seen." ?

I was able to reproduce this issue on chrome device Peppy with M54 54.0.2840.43 / 8743.44.0 beta. 

Gcomm hangout:
- Add 'Color enhancer' extension and start a hangout call
- Click on 'Invite people'
- Hangout screen gets stuck as soon as dialog box for sending invite opens up (mouse cursor movements were allowed)

Hotlane:
- Add 'Color enhancer' extension and start a hangout call
- Hangout receiving video was stuck in between and displayed overlapped video frames (sometimes)

Note:
1. This issue is not observed during apprtc calls on Peppy with M54
2. This issue is not observed during hangouts on device Peppy with M53 stable
(53.0.2785.144 / 8530.93.0)
3. Please find attached hangout webrtc-internal dump from device Peppy with M54 beta

 

Deleted: Desktop_webrtc_internals_dump_hangout_Peppy_M54beta.txt 1.1 MB

Desktop_webrtc_internals_dump_hangout_Peppy_M54beta.txt 1.1 MB View Download

Deleted: Peppy_webrtc_internals_dump_hangout_M54beta.txt 1.3 MB

Peppy_webrtc_internals_dump_hangout_M54beta.txt 1.3 MB View Download

Assigning Blink>WebRTC>Video component for further triage.

It didn't make it into M55 so moving to M56.

Bumping to M57. Please update if that's wrong.

Is this a Pri 1?

Bumping this to M58. Please correct if that's wrong.

Niklas - Can you triage?

Since this is a Google extension I'll try to find the authors and discuss it with them.

btw, this can't be a p2 since it's easy to disable the extension.

+kevers@ in case he has bandwidth to work on the extension.

+dmazzoni@, word on the street says you might know something about this.

@dmazzoni - Please update bug with bisect info. Thanks!

This is related to  issue 701521  but since it is video, possibly caused by a different bug.

+senorblanco@ in case it is the same root Blink invalidation bug.

Bumping to M60. Please correct if that's wrong.

Our latest build should have fixed this, maybe someone can verify?

I could not reproduce this issue on Chrome OS device Peppy with M59 59.0.3071.15  / 9460.5.0  dev

srcv, wnwen, should we mark this as fixed?