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When the app_id is empty from web contents, the tab could be an webpage
without app_id, so set the app_id as Chrome app_id, and set the correct
InstanceState for Chrome:
1. When the tab is active, it should be started, running and visible.
2. When the tab or an app is inactive, it should be started, running.

This CL also fix a crash bug which is caused by AppWindowBase smart
pointer.

Update AppServiceAppWindowLauncherController and browser_status_monitor
init order, so when browser status is updated, AppService app window
can be updated with the function OnInstanceUpdate.

BUG=1011235

Change-Id: Ie5146d44517f844d9bced6812b4c4c6e83930845
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1959191
Commit-Queue: Nancy Wang <nancylingwang@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Aga Wronska <agawronska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#723592}