Out of last 25 builds, 7 are green.

Let's see which tests failed in last 10 failed builds:

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4578

Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html
Unexpected Flakes: * http/tests/media/video-load-metadata-decode-error.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4577

Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4575

Unexpected Failures: * fast/events/middleClickAutoscroll-latching.html
Unexpected Failures: * media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4573

Unexpected Failures: * media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html
Unexpected Failures: * virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4572

Unexpected Failures: * virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4571

Unexpected Failures: * fast/events/middleClickAutoscroll-latching.html
Unexpected Failures: * gamepad/multiple-event-listeners.html
Unexpected Failures: * media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4570

Unexpected Failures: * fast/events/middleClickAutoscroll-latching.html
Unexpected Failures: * virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4567

Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs-forbidden.html
Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html
Unexpected Failures: * virtual/user-activation-v2/fast/events/middleClickAutoscroll-latching.html
 
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4566

Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html

https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac10.13%20Tests%20%28dbg%29/4565

Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs-forbidden.html
Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html

sort list.txt | uniq -c | sort -nr

      5 Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs.html
      3 Unexpected Failures: * virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html
      3 Unexpected Failures: * media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html
      3 Unexpected Failures: * fast/events/middleClickAutoscroll-latching.html
      2 Unexpected Failures: * fast/events/middleClickAutoscroll-nested-divs-forbidden.html
      1 Unexpected Flakes: * http/tests/media/video-load-metadata-decode-error.html
      1 Unexpected Failures: * virtual/user-activation-v2/fast/events/middleClickAutoscroll-latching.html
      1 Unexpected Failures: * gamepad/multiple-event-listeners.html

Let's disable all with > 1 count
     
virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html

media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html

fast/events/middleClickAutoscroll-nested-divs.html
fast/events/middleClickAutoscroll-latching.html
fast/events/middleClickAutoscroll-nested-divs-forbidden.html

The last three are handled in  issue 872635 .

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ecb1b145d74b627061f77a535f4df56536fda486

commit ecb1b145d74b627061f77a535f4df56536fda486
Author: vitaliii <vitaliii@chromium.org>
Date: Thu Aug 09 09:02:39 2018

Disable flaky f/e/middleClickAutoscroll-nested-divs-forbidden.html (Mac)

TBR=sahel@chromium.org
NOTRY=true

Bug:  872635 , 872632 
Change-Id: I59bb656ad0047c7391d96a6b59e1358af91a7b17
Reviewed-on: https://chromium-review.googlesource.com/1169002
Reviewed-by: vitaliii <vitaliii@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581832}
[modify] https://crrev.com/ecb1b145d74b627061f77a535f4df56536fda486/third_party/WebKit/LayoutTests/TestExpectations

The second test is already disabled on Win7 and there is issue 746128 for it, which I will reuse.

The first test is already disabled on Win and Linux and there is  issue 832842  for it.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8662296560d3dbd5e76092c8e4136f4e406d1185

commit 8662296560d3dbd5e76092c8e4136f4e406d1185
Author: vitaliii <vitaliii@chromium.org>
Date: Thu Aug 09 09:14:27 2018

Disable flaky m/c/video-enter-exit-{...}-show-controls.html (Mac).

media/controls/video-enter-exit-fullscreen-without-hovering-doesnt-show-controls.html

TBR=mlamouri@chromium.org
NOTRY=true

Bug: 746128, 872632 
Change-Id: Ib6d822f0a6ddfed1604ca1358f141b3b38ca8d35
Reviewed-on: https://chromium-review.googlesource.com/1169013
Reviewed-by: vitaliii <vitaliii@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581837}
[modify] https://crrev.com/8662296560d3dbd5e76092c8e4136f4e406d1185/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/526dc8867e1521d3e7ec424221f2aff112fceb01

commit 526dc8867e1521d3e7ec424221f2aff112fceb01
Author: vitaliii <vitaliii@chromium.org>
Date: Thu Aug 09 09:20:30 2018

Disable flaky v/w/e/w/w/RTCDTMFSender-ontonechange.https.html (Mac).

virtual/webrtc-wpt-unified-plan/external/wpt/webrtc/RTCDTMFSender-ontonechange.https.html

TBR=hta@chromium.org
NOTRY=true

Bug:  832842 , 872632 
Change-Id: If9522e93d1851b762c67005aa8fdcd83a71631fd
Reviewed-on: https://chromium-review.googlesource.com/1169016
Reviewed-by: vitaliii <vitaliii@chromium.org>
Commit-Queue: vitaliii <vitaliii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581839}
[modify] https://crrev.com/526dc8867e1521d3e7ec424221f2aff112fceb01/third_party/WebKit/LayoutTests/TestExpectations