This CL updates the illustration used in the Plugin VM installer to the
new asset.

Bug: b:158009852
Change-Id: I3edcc1ce4e920c97a9ab3876f1bf9e7ae4fae66d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2263416Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Jason Lin <lxj@google.com>
Commit-Queue: Jason Lin <lxj@google.com>
Cr-Commit-Position: refs/heads/master@{#788911}