Good Build:51.0.2693.2
Bad Build :51.0.2694.0

CHANGELOG URL:
  https://chromium.googlesource.com/chromium/src/+log/3ddca928b60a3ee16c3ffe945dd6b3916883e2ea..bf63918a7958b044bb5f8f3ee1fd887c4813781f

Suspecting https://codereview.chromium.org/1840533002 from changelog.

@pfeldman: Please re-assign if the issue is not related to your change.

Able to reproduce the issue on Mac 10.11.3 using chrome version 51.0.2700.0 

Just to update, still able to reproduce the issue on chrome version 51.0.2705.0 on MAC 10..14, Windows 7.

@pfeldman: Request you to please take a look into it.

Just to update. 

Still able to reproduce the issue on Chrome Canary Version 51.0.2708.0 & Chrome Dev Version - 51.0.2704.7 on MAC (10.11.4) & Windows 7.

@pfeldman: Could you to please take a look into it.

Thank you.

Deleted: 600645.mov 1.1 MB

600645.mov 1.1 MB Download

Unable to repro this issue on Windows 7, MAC (10.11.4) & Ubuntu Trusty (14.04) for Google Chrome Dev Version - 51.0.2704.19 and Chrome Canary Version - 52.0.2712.0

Screen-recording is attached.

@radhakrishnamurthy.talluri: Could you please re-test the same on the above mentioned Chrome Versions and let us know your observations.

Removing the RB-Stable label meanwhile, please add it back if it is required.

Thank you.

Deleted: 600645 - Chrome Canary Version - 52.0.2712.0.mov 3.1 MB

600645 - Chrome Canary Version - 52.0.2712.0.mov 3.1 MB Download

Deleted: 600645 - Chrome Dev Version - 51.0.2704.19.mov 3.6 MB

600645 - Chrome Dev Version - 51.0.2704.19.mov 3.6 MB Download

I have re-tested the issue on the above mentioned chrome versions, I am unable to reproduce the issue through the repro steps that were mentioned above.

However, I am able to repro the issue by the following steps:

(1)Launch chrome and open devtools on any page.
(2)Toggle device toolbar on and click on the 3 dot menu > capture screenshot(Downloads bar appears at the bottom of the page).
(3)Type "chrome://downloads" in the omnibox and hit enter and close the devtools.
(4)Now try to clear the list by clicking on 'CLEAR ALL' button in downloads page and observe.

By these steps I am able to reproduce the issue on both Chrome Dev Version - 51.0.2704.19 and Chrome Version - 52.0.2712.0 on Linux.

Video is attached, please refer to it.

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actual.mp4 1.7 MB Download

Adding back the RB-Stable Label, please remove it if it is not required.

Still able to reproduce the issue on mac 10.11 chrome version 51.0.2704.19 and canary 52.0.2712.0 with the steps given in comment #6

pfeldman@, Could you please look into this

pfeldman@ : Could you please take look into this, the issue still persists on 52.0.2717.0.

Still able to reproduce the issue on latest Chrome beta(51.0.2704.29),Dev(52.0.2716.0) and Canary channel. 

chrome://downloads is not supposed to work while emulating screen.