Tracking launch activity to decide next splash screen style.

The generic rule to showing an empty splash screen is that if an
activity is launched from another visible activity besides Launcher.
So with this rule, when prepare the starting window for a launching
activity, we can tracking where the source activity comes from and
whether it has show splash screen or has drawn window before.
This can solve the inconsistent launch sequence when launching an
activity from non-system surface for the status either new task or
new process.
There will show an empty style splash screen if the launching
activity was drawn or it has show splash screen before.
Another coner case is that a process could start a new activity from
service, for the better UX we should also check whether there any
existing activities which were from the same process or same package
and has already at foreground.

We can still add "show icon_style_splash_screen" flag in the future.

Bug: 185433040
Bug: 185567723
Bug: 185448781
Test: atest SplashscreenTests ActivityRecordTests
Test: manual test
Launch browser from -1, empty splash screen
Launch calendar from launcher, icon splash screen
Launch work app from Settings -> Notifications -> Calendar show empty
splash screen
Launch Settings -> System update show empty splash screen
Launch Dialer -> call out -> show empty splash screen on InCallActivity

Change-Id: Id84f1f69de6c5e3f1c21cd249c62404958410193