Few more links:
1) https://twitter.com/search?q=%23VIDEO&src=tyah
2) https://www.facebook.com/search/top/?q=funny%20videos
3) https://www.amazon.com/dp/B017HYSN0A/ref=atv_mv_hom_1_c_pmpop_3_brws1?_encoding=UTF8&pf_rd_i=home&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=2695357422&pf_rd_r=RE2H3TW19X4370VGH479&pf_rd_s=center-10&pf_rd_t=12801
4) http://edition.cnn.com/videos

+piman@, +ccameron in CC

It's possible my patch is at fault but it's not immediately obvious to me what's wrong in the patch. I'm building for Mac locally now, and I'll debug this. Thanks!

I should note that ccameron@ has worked on fullscreen mac video recently: https://codereview.chromium.org/2479723003/

Chris, could this actually be something you broke recently, or am I at fault? I'm still working on a full Mac build so I won't be able to repro this for another 20-30 min :-)

I tried reverting ccameron's patch and that doesn't help. I'll try rolling back my last few patches. Video works for a little while full screen then goes blank.

I've confirmed that reverting https://codereview.chromium.org/2492583002 does indeed fix the problem. I'll investigate more carefully what I broke. 

Fix in flight: https://codereview.chromium.org/2499703002/

I've TBR'ed Antoine because he's OOO and this is a trivial fix to a serious problem.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8e56e9c3126ffa852351d14c2bd7d74e703e5827

commit 8e56e9c3126ffa852351d14c2bd7d74e703e5827
Author: fsamuel <fsamuel@chromium.org>
Date: Fri Nov 11 21:35:15 2016

gpu: Fix Mac fullscreen video

https://codereview.chromium.org/2492583002/ introduced a bug where
one of the SwapBufeersCompleteParams were dropped before sending
an IPC to the gpu host. This CL plumbs the fullscreen_low_power_ca_context_id
parameter and deletes a stale comment.

BUG= 664489 
TBR=piman@chromium.org
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2499703002
Cr-Commit-Position: refs/heads/master@{#431652}

[modify] https://crrev.com/8e56e9c3126ffa852351d14c2bd7d74e703e5827/gpu/ipc/service/gpu_command_buffer_stub.cc
[modify] https://crrev.com/8e56e9c3126ffa852351d14c2bd7d74e703e5827/gpu/ipc/service/pass_through_image_transport_surface.cc

Thank you @fsamuel for the quick fix.
Verified the issue on Mac 10.11.6 and Mac 10.12.1(both retina & Non-retina)using dev # 56.0.2918.0 and its working fine.

Deleted: 664489_Nov_18.mp4 7.3 MB

	664489_Nov_18.mp4 7.3 MB View Download