Add launch_source and display_id args to the App Service Launch method

BUG=826982

Change-Id: I12d79f3a7700cddd135cb9dafa6adf6fa96b3e05
Reviewed-on: https://chromium-review.googlesource.com/c/1355311
Commit-Queue: Nigel Tao <nigeltao@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613450}
17 files changed