Add a new flag for enable_resizing_metrics.

Change-Id: I9f33ae704715c21e68632892294cebc624efee68
Flag: EXEMPT adding a new flag
Test: EXEMPT adding a new flag
Bug: 341319100
diff --git a/core/java/android/window/flags/lse_desktop_experience.aconfig b/core/java/android/window/flags/lse_desktop_experience.aconfig
index 6e89c49..0f401d3 100644
--- a/core/java/android/window/flags/lse_desktop_experience.aconfig
+++ b/core/java/android/window/flags/lse_desktop_experience.aconfig
@@ -145,6 +145,13 @@
 }
 
 flag {
+    name: "enable_resizing_metrics"
+    namespace: "lse_desktop_experience"
+    description: "Whether to enable log collection for task resizing in desktop windowing mode"
+    bug: "341319100"
+}
+
+flag {
     name: "enable_caption_compat_inset_force_consumption"
     namespace: "lse_desktop_experience"
     description: "Enables force-consumption of caption bar insets for immersive apps in freeform"