Add log to debug why the window frame could be empty

Bug: 298562855
Test: presubmit
Change-Id: I98ad4dfc6fad0db3976b70cb359a2894f887c119
diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index e720446..e83ef14 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -2494,6 +2494,14 @@
                 outInsetsState.set(win.getCompatInsetsState(), true /* copySources */);
             }
 
+            // TODO (b/298562855): Remove this after identifying the reason why the frame is empty.
+            if (win.mAttrs.providedInsets != null && win.getFrame().isEmpty()) {
+                Slog.w(TAG, "Empty frame of " + win
+                        + " configChanged=" + configChanged
+                        + " frame=" + win.getFrame().toShortString()
+                        + " attrs=" + attrs);
+            }
+
             ProtoLog.v(WM_DEBUG_FOCUS, "Relayout of %s: focusMayChange=%b",
                     win, focusMayChange);