GitLab

Add new window operations passing between background and foreground
window. Foreground and background will bind corresponding operations and
call methods across background and foreground.

Bug: b/141518806
Test: tast run <DUT> 'camera.CCAUI*'
Change-Id: I45801659712af6bc6f439e67c2ae37ad8ab6805d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1935634Reviewed-by: Shik Chen <shik@chromium.org>
Reviewed-by: Wei Lee <wtlee@chromium.org>
Commit-Queue: Kuo Jen Wei <inker@chromium.org>
Auto-Submit: Kuo Jen Wei <inker@chromium.org>
Cr-Commit-Position: refs/heads/master@{#722400}