dPWA: Add support for a few more actions.

 - install_using_omnibox_icon
 - assert_app_locally_installed_internal
 - assert_manifest_display_mode_minimal_internal

Change-Id: I9e77fe072006c32d4867f7e735f2994c71f92725
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2869132


Commit-Queue: Jarryd Goodman <jarrydg@chromium.org>
Auto-Submit: Jarryd Goodman <jarrydg@chromium.org>
Reviewed-by: Phillis Tang <phillis@chromium.org>
Reviewed-by: Daniel Murphy <dmurph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#887355}