Stop user faster and clear stale broadcasts

Moved several USER_STOPPING registered receivers to listen
to USER_STOPPED, since they don't need to be blocking the
shutdown of the user.

Clear all stale broadcasts when stopping a user, so that we
don't unnecessarily start up processes and deliver stale
broadcasts. This was causing code to run when the user was
already stopped and resulted in crashes when other providers
and services couldn't be started anymore. Hopefully this fixes
many of those races.

Bug: 28371487
Change-Id: Ic35a7a23fa8fe009a53f8bf7545d4dad5fa34134
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 0287332..d85827e 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -730,7 +730,7 @@
         //set up the listener for user state for creating user VPNs
         IntentFilter intentFilter = new IntentFilter();
         intentFilter.addAction(Intent.ACTION_USER_STARTING);
-        intentFilter.addAction(Intent.ACTION_USER_STOPPING);
+        intentFilter.addAction(Intent.ACTION_USER_STOPPED);
         intentFilter.addAction(Intent.ACTION_USER_ADDED);
         intentFilter.addAction(Intent.ACTION_USER_REMOVED);
         intentFilter.addAction(Intent.ACTION_USER_UNLOCKED);
@@ -3619,7 +3619,7 @@
         synchronized(mVpns) {
             Vpn userVpn = mVpns.get(userId);
             if (userVpn == null) {
-                loge("Stopping user has no VPN");
+                loge("Stopped user has no VPN");
                 return;
             }
             mVpns.delete(userId);
@@ -3664,7 +3664,7 @@
 
             if (Intent.ACTION_USER_STARTING.equals(action)) {
                 onUserStart(userId);
-            } else if (Intent.ACTION_USER_STOPPING.equals(action)) {
+            } else if (Intent.ACTION_USER_STOPPED.equals(action)) {
                 onUserStop(userId);
             } else if (Intent.ACTION_USER_ADDED.equals(action)) {
                 onUserAdded(userId);