Run isKeyguardSecure under system privileges

In certain cases, isKeyguardSecure calls UserManager.getProfileParent, which
requires MANAGE_USERS permission.
Now the check is done under system privileges.

Bug:18765066
Change-Id: I6b23aedee06403d36523af5fee9c7db9659284b3

parent 84c5e8eb

services/core/java/com/android/server/wm/WindowManagerService.java

+6 −1

Original line number	Diff line number	Diff line
		@@ -5379,7 +5379,12 @@ public class WindowManagerService extends IWindowManager.Stub

		@Override
		public boolean isKeyguardSecure() {
		long origId = Binder.clearCallingIdentity();
		try {
		return mPolicy.isKeyguardSecure();
		} finally {
		Binder.restoreCallingIdentity(origId);
		}
		}

		@Override