Chrome Version: 73.0.3678.0 (Official Build) 657e8a65d00ae8de986ce0d7ef4d3f8a67bd008b-refs/branch-heads/3678@{#1}(32/64-bit).
 	
OS: Win(7,8,8.1,10).

Test URL: https://mounirlamouri.github.io/sandbox/media/dynamic-controls.html
	       
What steps will reproduce the problem?
1. Launch chrome and Navigate to the above URL.
2. Click on 'Full-screen' icon on video to go to full-screen mode and then click on 'Download' option from the overflow menu. 
3. Cancel the ongoing download and click on 'Show All' button from Download shelf.
4. Observe.

Actual Result: Black screen is seen while navigating to chrome://downloads after clicking 'Show All' button in download shelf.
Expected Result: No such black screen should be seen while navigating to chrome://downloads page.

This is a regression issue broken in M-71 and below is the bisect-info:
Good Build : 71.0.3558.0(Revision:593043)
Bad Build : 71.0.3559.0(Revision:593399)

Change-Log: 

https://chromium.googlesource.com/chromium/src/+log/71.0.3558.0..71.0.3559.0?pretty=fuller&n=10000

Suspect: r593234 ?

rayankans: 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. Unable to provide 'per-revision' bisect as it shows "Access Denied" error message for above range. (tried on other machines but still getting the same error again)
2. Unable to perform Chromium bisect as 'File is not a zip file' error is seen.
3. Hence providing suspect manually.
4. Issue is also seen on Stable #71.0.3578.98, Beta #72.0.3626.64 and Dev #73.0.3673.0 build.
5. Issue is not observed on Mac(10.13.1, 10.13.6, 10.14.3) and Linux(14.04 LTS) OS

Kindly refer the below attached screen cast for reference.

Thank You!
 

Deleted: Actual Result.mp4 2.5 MB

	Actual Result.mp4 2.5 MB View Download

Deleted: Expected Result.mp4 2.7 MB

	Expected Result.mp4 2.7 MB View Download