SF: Add flag for FrameTracker removal

Bug: 241394120
Test: builds
Flag: com.android.graphics.surfaceflinger.flags.deprecate_frame_tracker
Change-Id: Ib7fdfc31f92d292fdceb6027d22c9ed7fbeadb3e
diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index 57ef4c7..12616e3 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -158,6 +158,7 @@
     DUMP_READ_ONLY_FLAG(true_hdr_screenshots);
     DUMP_READ_ONLY_FLAG(display_config_error_hal);
     DUMP_READ_ONLY_FLAG(connected_display_hdr);
+    DUMP_READ_ONLY_FLAG(deprecate_frame_tracker);
 
 #undef DUMP_READ_ONLY_FLAG
 #undef DUMP_SERVER_FLAG
@@ -264,6 +265,7 @@
 FLAG_MANAGER_READ_ONLY_FLAG(true_hdr_screenshots, "debug.sf.true_hdr_screenshots");
 FLAG_MANAGER_READ_ONLY_FLAG(display_config_error_hal, "");
 FLAG_MANAGER_READ_ONLY_FLAG(connected_display_hdr, "");
+FLAG_MANAGER_READ_ONLY_FLAG(deprecate_frame_tracker, "");
 
 /// Trunk stable server flags ///
 FLAG_MANAGER_SERVER_FLAG(refresh_rate_overlay_on_external_display, "")