Merge "Add missing isShellUser check" into qt-dev am: 8416431f37

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12171286

Change-Id: I45f0fa7f6d99d1bf7572aa53f084115a1cb920e5

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

@@ -3171,6 +3171,10 @@ 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) {