[App Management] Fixed layout error on resizing.

When resizing the app management page, a horizontal scroll bar would
appear. This was addressed by adding flex property to the parent container.

Bug: 906508
Change-Id: Ic2cd53585c2f68351e230f5bfadacd95c42c9fc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1514273
Auto-Submit: Jeevan Shikaram <jshikaram@chromium.org>
Commit-Queue: calamity <calamity@chromium.org>
Reviewed-by: calamity <calamity@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639390}
1 file changed