SF: Add a flag vrr_bugfix_dropped_frame

BUG: 343603085
Test: atest libsurfaceflinger_unittest
Flag: com.android.graphics.surfaceflinger.flags.vrr_bugfix_dropped_frame
Change-Id: Ib53b48a704e7752773800018a579a1d641badde6
diff --git a/services/surfaceflinger/surfaceflinger_flags_new.aconfig b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
index ee12325..9619f68 100644
--- a/services/surfaceflinger/surfaceflinger_flags_new.aconfig
+++ b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
@@ -125,4 +125,15 @@
   }
 } # vrr_bugfix_24q4
 
+flag {
+  name: "vrr_bugfix_dropped_frame"
+  namespace: "core_graphics"
+  description: "bug fix for VRR dropped frame"
+  bug: "343603085"
+  is_fixed_read_only: true
+  metadata {
+    purpose: PURPOSE_BUGFIX
+  }
+} # vrr_bugfix_dropped_frame
+
 # IMPORTANT - please keep alphabetize to reduce merge conflicts