Chrome Version : 71.0.3564.0 (Official Build) 33e646f935a73e694a752ee5cd5ad761efc71809-refs/branch-heads/3564@{#1} 32/64 bit
OS : Windows(7, 8, 8.1 ,10), Mac(10.12.6, 10.13.1, 10.14, 10.13.6), Linux(14.04 LTS)

Test URL : 
https://www.quirksmode.org/html5/tests/video.html

What steps will reproduce the problem?
1. Launch chrome and navigate to above URL.
2. Hover mouse on 'Volume' icon in video and decrease the slider completely such that audio gets muted.
3. Now try to click on 'Volume' icon using mouse and observe.

Actual Result : 'Volume' icon does not work (i.e. unable to mute/unmute) when audio is muted using 'Volume slider'.

Expected Result :  Audio icon should work as expected even when 'Volume slider' is completely decreased.

This is a regression issue broken in ‘M-71’ and below is the 'Chromium bisect' information:
Good Build : 71.0.3562.0 (Revision : 594164)
Bad Build : 71.0.3563.0 (Revision : 594642)

Chromium bisect URL:
https://chromium.googlesource.com/chromium/src/+log/65d577fb9759e31673e19d76db8b4a4e447dab39..cd031b000616f1d080e646a6fd545c03d94a369c

Suspect: r594612

steimel@ : Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Note:
1. Issue can be reproduced with any test URL that has html5 video on it.
2. Unable to provide 'per-revision' bisect as it shows "We don't have enough builds to bisect" error message.
3. Tried on other machines but still getting the same error again.
4. Hence provided suspect through 'Chromium bisect'
 

Deleted: Actual_PiP.mp4 2.0 MB

	Actual_PiP.mp4 2.0 MB View Download

Deleted: Expected_PiP.mp4 1.9 MB

	Expected_PiP.mp4 1.9 MB View Download