Add swipe up onboarding from apps

After launching 3 apps, we create a window at the bottom
attached to the nav bar to teach users to swipe for recents.
There is an X on this window to dismiss it, but we will keep
showing the onboarding every time they open apps until they
perform the swipe up action.

Test: manual

Bug: 70180942
Change-Id: I4b15fac918b7b1633a3c09ab0819f2acb1dce697
diff --git a/packages/SystemUI/src/com/android/systemui/OverviewProxyService.java b/packages/SystemUI/src/com/android/systemui/OverviewProxyService.java
index 0be522b..244c1b9 100644
--- a/packages/SystemUI/src/com/android/systemui/OverviewProxyService.java
+++ b/packages/SystemUI/src/com/android/systemui/OverviewProxyService.java
@@ -195,6 +195,10 @@
         return mOverviewProxy;
     }
 
+    public ComponentName getLauncherComponent() {
+        return mLauncherComponentName;
+    }
+
     private void disconnectFromLauncherService() {
         if (mOverviewProxy != null) {
             mOverviewProxy.asBinder().unlinkToDeath(mOverviewServiceDeathRcpt, 0);