libgui: Add a flag for the CameraStreamSplitter refactor

We'll use this flag to pick the current (deprecated) or new
(IGBP/IGBC-free) versions of this class.

This is a libcameraservice class, but we'll put the flag here so it's
close to th other wb flags.

See go/warren-buffers for more information.

Bug: 340933206
Flag: EXEMPT adding flag
Test: n/a
Change-Id: I40f4ca09084620ba92efcac2ed6cf1be36b2dd95
diff --git a/libs/gui/libgui_flags.aconfig b/libs/gui/libgui_flags.aconfig
index 74d806e..779482d 100644
--- a/libs/gui/libgui_flags.aconfig
+++ b/libs/gui/libgui_flags.aconfig
@@ -45,6 +45,14 @@
 } # wb_platform_api_improvements
 
 flag {
+    name: "wb_stream_splitter"
+    namespace: "core_graphics"
+    description: "Removes IGBP/IGBCs from Camera3StreamSplitter as part of BufferQueue refactors"
+    bug: "340933206"
+    is_fixed_read_only: true
+} # wb_stream_splitter
+
+flag {
   name: "edge_extension_shader"
   namespace: "windowing_frontend"
   description: "Enable edge extension via shader"