Merge "Add missing isShellUser check" into rvc-dev am: 455470d3b2

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12099336

Change-Id: Ie38ba3aaa00b4e85058d8832f559825d22494e0e

services/core/java/com/android/server/am/ActivityManagerService.java

@@ -3318,6 +3318,10 @@ public class ActivityManagerService extends IActivityManager.Stub
     @Override
     public boolean setProcessMemoryTrimLevel(String process, int userId, int level)
             throws RemoteException {
+        if (!isCallerShell()) {
+            EventLog.writeEvent(0x534e4554, 160390416, Binder.getCallingUid(), "");
+            throw new SecurityException("Only shell can call it");
+        }
         synchronized (this) {
             final ProcessRecord app = findProcessLocked(process, userId, "setProcessMemoryTrimLevel");
             if (app == null) {