diff --git a/dev/tools/gen_keycodes/data/gtk_key_mapping_cc.tmpl b/dev/tools/gen_keycodes/data/gtk_key_mapping_cc.tmpl
index e77e796bd0..89f8b86c1a 100644
--- a/dev/tools/gen_keycodes/data/gtk_key_mapping_cc.tmpl
+++ b/dev/tools/gen_keycodes/data/gtk_key_mapping_cc.tmpl
@@ -7,8 +7,6 @@
 #include <glib.h>
 #include <map>
 
-#include "flutter/shell/platform/linux/fl_key_embedder_responder_private.h"
-
 // DO NOT EDIT -- DO NOT EDIT -- DO NOT EDIT
 // This file is generated by
 // flutter/flutter@dev/tools/gen_keycodes/bin/gen_keycodes.dart and should not
@@ -25,13 +23,13 @@ static bool insert_record(GHashTable* table, guint64 xkb, guint64 fl_key) {
                              uint64_to_gpointer(fl_key));
 }
 
-void initialize_xkb_to_physical_key(GHashTable* table) {
+std::map<uint64_t, uint64_t> xkb_to_physical_key_map = {
 @@@XKB_SCAN_CODE_MAP@@@
-}
+};
 
-void initialize_gtk_keyval_to_logical_key(GHashTable* table) {
+std::map<uint64_t, uint64_t> gtk_keyval_to_logical_key_map = {
 @@@GTK_KEYVAL_CODE_MAP@@@
-}
+};
 
 void initialize_modifier_bit_to_checked_keys(GHashTable* table) {
   FlKeyEmbedderCheckedKey* data;
diff --git a/dev/tools/gen_keycodes/lib/gtk_code_gen.dart b/dev/tools/gen_keycodes/lib/gtk_code_gen.dart
index 2f61022aba..1a61a5e320 100644
--- a/dev/tools/gen_keycodes/lib/gtk_code_gen.dart
+++ b/dev/tools/gen_keycodes/lib/gtk_code_gen.dart
@@ -27,7 +27,8 @@ class GtkCodeGenerator extends PlatformCodeGenerator {
     final OutputLines<int> lines = OutputLines<int>('GTK scancode map');
     for (final PhysicalKeyEntry entry in keyData.entries) {
       if (entry.xKbScanCode != null) {
-        lines.add(entry.xKbScanCode!, '  insert_record(table, ${toHex(entry.xKbScanCode)}, ${toHex(entry.usbHidCode)});  // ${entry.constantName}');
+        lines.add(entry.xKbScanCode!,
+          '    {${toHex(entry.xKbScanCode)}, ${toHex(entry.usbHidCode)}},  // ${entry.constantName}');
       }
     }
     return lines.sortedJoin().trimRight();
@@ -38,7 +39,8 @@ class GtkCodeGenerator extends PlatformCodeGenerator {
     final OutputLines<int> lines = OutputLines<int>('GTK keyval map');
     for (final LogicalKeyEntry entry in logicalData.entries) {
       zipStrict(entry.gtkValues, entry.gtkNames, (int value, String name) {
-        lines.add(value, '  insert_record(table, ${toHex(value)}, ${toHex(entry.value, digits: 11)});  // $name');
+        lines.add(value,
+          '    {${toHex(value)}, ${toHex(entry.value, digits: 11)}},  // $name');
       });
     }
     return lines.sortedJoin().trimRight();