Bring up unlock screen for FLAG_DISMISS_KEYGUARD.

Widgets that did not launch Activitys would not display the unlock
screens when they were tapped. Now any window that is shown with
FLAG_DISMISS_KEYGUARD set while the keyguard is locked will
cause the unlock screen to be displayed.

Bug: 7301530 fixed.
Change-Id: I90d11b52d2b63260bdb5f2b6eb7e98eb7a4d9331

services/java/com/android/server/wm/WindowState.java

@@ -282,7 +282,7 @@ final class WindowState implements WindowManagerPolicy.WindowState {
         mEnforceSizeCompat = (mAttrs.flags & FLAG_COMPATIBLE_WINDOW) != 0;
         if (WindowManagerService.localLOGV) Slog.v(
             TAG, "Window " + this + " client=" + c.asBinder()
-            + " token=" + token + " (" + mAttrs.token + ")");
+            + " token=" + token + " (" + mAttrs.token + ")" + " params=" + a);
         try {
             c.asBinder().linkToDeath(deathRecipient, 0);
         } catch (RemoteException e) {