AppShell should resize the WebContents when the host window is resized.
Instead, the WebContents remains the same size, even if the host is larger or smaller. The app being displayed will not stretch or shrink as a web page normally would when its frame is resized.
1. ./out/app_shell --load-app=/path/to/app
2. resize window
Comment 1 by bugdroid1@chromium.org
, Aug 4 2017