Chrome Version: (copy from chrome://version)
OS: (e.g. Win10, MacOS 10.12, etc...)

What steps will reproduce the problem?
(1) Open Drive web app
(2) Observe the icon to show in the shelf
(3) Open context menu, select pin
(4) Close the app

What is the expected result?
The icon should disappear from the shelf

What happens instead?
The icon stays in the shelf. Toggling pin/unpin does not affect the above steps.


Please use labels and text to provide additional information.

If this is a regression (i.e., worked before), please consider using the
bisect tool (https://www.chromium.org/developers/bisect-builds-py) to help
us identify the root cause and more rapidly triage the issue.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.