diff --git a/dev/tools/gen_keycodes/bin/gen_keycodes.dart b/dev/tools/gen_keycodes/bin/gen_keycodes.dart
index fa49600cfab5..156de145303e 100644
--- a/dev/tools/gen_keycodes/bin/gen_keycodes.dart
+++ b/dev/tools/gen_keycodes/bin/gen_keycodes.dart
@@ -65,7 +65,7 @@ Future<String> getGlfwKeyCodes() async {
 }
 
 Future<String> getGtkKeyCodes() async {
-  final Uri keyCodesUri = Uri.parse('https://gitlab.gnome.org/GNOME/gtk/-/raw/master/gdk/gdkkeysyms.h');
+  final Uri keyCodesUri = Uri.parse('https://gitlab.gnome.org/GNOME/gtk/-/raw/gtk-3-24/gdk/gdkkeysyms.h');
   return http.read(keyCodesUri);
 }
 
diff --git a/dev/tools/gen_keycodes/data/android_key_name_to_name.json b/dev/tools/gen_keycodes/data/android_key_name_to_name.json
index 3f8c991dd66d..51e0269fff99 100644
--- a/dev/tools/gen_keycodes/data/android_key_name_to_name.json
+++ b/dev/tools/gen_keycodes/data/android_key_name_to_name.json
@@ -201,7 +201,6 @@
   "NavigatePrevious": ["NAVIGATE_PREVIOUS"],
   "NewKey": ["NEW"],
   "NonConvert": ["MUHENKAN"],
-  "None": ["UNKNOWN"],
   "Notification": ["NOTIFICATION"],
   "NumLock": ["NUM_LOCK"],
   "NumberSign": ["POUND"],
diff --git a/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json b/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
index 2c73091d9899..1a2bd2b868ae 100644
--- a/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
+++ b/dev/tools/gen_keycodes/data/gtk_logical_name_mapping.json
@@ -101,8 +101,6 @@
   "IntlYen": ["yen"],
   "KanjiMode": ["Kanji"],
   "Katakana": ["Katakana"],
-  "KbdIllumDown": ["KbdBrightnessDown"],
-  "KbdIllumUp": ["KbdBrightnessUp"],
   "LaunchAudioBrowser": ["Music"],
   "LaunchCalendar": ["Calendar"],
   "LaunchDocuments": ["Document"],
diff --git a/dev/tools/gen_keycodes/data/keyboard_key.tmpl b/dev/tools/gen_keycodes/data/keyboard_key.tmpl
index 834611482cda..e13e03582fbe 100644
--- a/dev/tools/gen_keycodes/data/keyboard_key.tmpl
+++ b/dev/tools/gen_keycodes/data/keyboard_key.tmpl
@@ -166,10 +166,12 @@ class LogicalKeyboardKey extends KeyboardKey {
 
   @override
   bool operator ==(Object other) {
-    if (identical(this, other))
+    if (identical(this, other)) {
       return true;
-    if (other.runtimeType != runtimeType)
+    }
+    if (other.runtimeType != runtimeType) {
       return false;
+    }
     return other is LogicalKeyboardKey
         && other.keyId == keyId;
   }
@@ -348,10 +350,12 @@ class PhysicalKeyboardKey extends KeyboardKey {
 
   @override
   bool operator ==(Object other) {
-    if (identical(this, other))
+    if (identical(this, other)) {
       return true;
-    if (other.runtimeType != runtimeType)
+    }
+    if (other.runtimeType != runtimeType) {
       return false;
+    }
     return other is PhysicalKeyboardKey
         && other.usbHidUsage == usbHidUsage;
   }
diff --git a/dev/tools/gen_keycodes/lib/keyboard_maps_code_gen.dart b/dev/tools/gen_keycodes/lib/keyboard_maps_code_gen.dart
index a30e59859595..39d4dc255495 100644
--- a/dev/tools/gen_keycodes/lib/keyboard_maps_code_gen.dart
+++ b/dev/tools/gen_keycodes/lib/keyboard_maps_code_gen.dart
@@ -305,8 +305,8 @@ class KeyboardMapsCodeGenerator extends BaseCodeGenerator {
   String get _webPhysicalKeyMap {
     final OutputLines<String> lines = OutputLines<String>('Web physical key map');
     for (final PhysicalKeyEntry entry in keyData.entries) {
-      if (entry.name != null) {
-        lines.add(entry.name, "  '${entry.name}': PhysicalKeyboardKey.${entry.constantName},");
+      for (final String webCodes in entry.webCodes()) {
+        lines.add(entry.name, "  '$webCodes': PhysicalKeyboardKey.${entry.constantName},");
       }
     }
     return lines.sortedJoin().trimRight();
diff --git a/dev/tools/gen_keycodes/lib/logical_key_data.dart b/dev/tools/gen_keycodes/lib/logical_key_data.dart
index a7d0d72843e2..5439e922d642 100644
--- a/dev/tools/gen_keycodes/lib/logical_key_data.dart
+++ b/dev/tools/gen_keycodes/lib/logical_key_data.dart
@@ -372,6 +372,9 @@ class LogicalKeyData {
 
     glfwNameToKeyCode.forEach((String glfwName, int value) {
       final String? name = nameToFlutterName[glfwName];
+      if (name == null) {
+        return;
+      }
       final LogicalKeyEntry? entry = data[nameToFlutterName[glfwName]];
       if (entry == null) {
         print('Invalid logical entry by name $name (from GLFW $glfwName)');
diff --git a/dev/tools/gen_keycodes/lib/physical_key_data.dart b/dev/tools/gen_keycodes/lib/physical_key_data.dart
index 5e071a2305e5..49829930371e 100644
--- a/dev/tools/gen_keycodes/lib/physical_key_data.dart
+++ b/dev/tools/gen_keycodes/lib/physical_key_data.dart
@@ -259,6 +259,12 @@ class PhysicalKeyEntry {
   /// The Chromium event code for the key.
   final String? chromiumCode;
 
+  Iterable<String> webCodes() sync* {
+    if (chromiumCode != null) {
+      yield chromiumCode!;
+    }
+  }
+
   /// Creates a JSON map from the key data.
   Map<String, dynamic> toJson() {
     return removeEmptyValues(<String, dynamic>{
diff --git a/dev/tools/gen_keycodes/lib/testing_key_codes_java_gen.dart b/dev/tools/gen_keycodes/lib/testing_key_codes_java_gen.dart
index 4660f74e4630..281f6c26ce08 100644
--- a/dev/tools/gen_keycodes/lib/testing_key_codes_java_gen.dart
+++ b/dev/tools/gen_keycodes/lib/testing_key_codes_java_gen.dart
@@ -35,7 +35,7 @@ class KeyCodesJavaGenerator extends BaseCodeGenerator {
     final OutputLines<int> lines = OutputLines<int>('Physical Key list');
     for (final PhysicalKeyEntry entry in keyData.entries) {
       lines.add(entry.usbHidCode, '''
-  public static final long PHYSICAL_${_toUpperSnake(entry.constantName)} = ${toHex(entry.usbHidCode)}l;''');
+  public static final long PHYSICAL_${_toUpperSnake(entry.constantName)} = ${toHex(entry.usbHidCode)}L;''');
     }
     return lines.sortedJoin().trimRight();
   }
@@ -45,7 +45,7 @@ class KeyCodesJavaGenerator extends BaseCodeGenerator {
     final OutputLines<int> lines = OutputLines<int>('Logical Key list');
     for (final LogicalKeyEntry entry in logicalData.entries) {
       lines.add(entry.value, '''
-  public static final long LOGICAL_${_toUpperSnake(entry.constantName)} = ${toHex(entry.value, digits: 11)}l;''');
+  public static final long LOGICAL_${_toUpperSnake(entry.constantName)} = ${toHex(entry.value, digits: 11)}L;''');
     }
     return lines.sortedJoin().trimRight();
   }
diff --git a/dev/tools/gen_keycodes/lib/web_code_gen.dart b/dev/tools/gen_keycodes/lib/web_code_gen.dart
index 09bf0705954d..3dca72b055d1 100644
--- a/dev/tools/gen_keycodes/lib/web_code_gen.dart
+++ b/dev/tools/gen_keycodes/lib/web_code_gen.dart
@@ -37,9 +37,9 @@ class WebCodeGenerator extends PlatformCodeGenerator {
   String get _webPhysicalKeyCodeMap {
     final OutputLines<String> lines = OutputLines<String>('Web physical map');
     for (final PhysicalKeyEntry entry in keyData.entries) {
-      if (entry.name != null) {
-        lines.add(entry.name,
-            "  '${entry.name}': ${toHex(entry.usbHidCode)}, // ${entry.constantName}");
+      for (final String webCode in entry.webCodes()) {
+        lines.add(webCode,
+            "  '$webCode': ${toHex(entry.usbHidCode)}, // ${entry.constantName}");
       }
     }
     return lines.sortedJoin().trimRight();
diff --git a/packages/flutter/lib/src/services/keyboard_maps.dart b/packages/flutter/lib/src/services/keyboard_maps.dart
index 89453719af7e..0c26814e1f9d 100644
--- a/packages/flutter/lib/src/services/keyboard_maps.dart
+++ b/packages/flutter/lib/src/services/keyboard_maps.dart
@@ -2459,14 +2459,9 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'Backquote': PhysicalKeyboardKey.backquote,
   'Backslash': PhysicalKeyboardKey.backslash,
   'Backspace': PhysicalKeyboardKey.backspace,
-  'BassBoost': PhysicalKeyboardKey.bassBoost,
   'BracketLeft': PhysicalKeyboardKey.bracketLeft,
   'BracketRight': PhysicalKeyboardKey.bracketRight,
-  'BrightnessAuto': PhysicalKeyboardKey.brightnessAuto,
   'BrightnessDown': PhysicalKeyboardKey.brightnessDown,
-  'BrightnessMaximum': PhysicalKeyboardKey.brightnessMaximum,
-  'BrightnessMinimum': PhysicalKeyboardKey.brightnessMinimum,
-  'BrightnessToggle': PhysicalKeyboardKey.brightnessToggle,
   'BrightnessUp': PhysicalKeyboardKey.brightnessUp,
   'BrowserBack': PhysicalKeyboardKey.browserBack,
   'BrowserFavorites': PhysicalKeyboardKey.browserFavorites,
@@ -2476,10 +2471,6 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'BrowserSearch': PhysicalKeyboardKey.browserSearch,
   'BrowserStop': PhysicalKeyboardKey.browserStop,
   'CapsLock': PhysicalKeyboardKey.capsLock,
-  'ChannelDown': PhysicalKeyboardKey.channelDown,
-  'ChannelUp': PhysicalKeyboardKey.channelUp,
-  'Close': PhysicalKeyboardKey.close,
-  'ClosedCaptionToggle': PhysicalKeyboardKey.closedCaptionToggle,
   'Comma': PhysicalKeyboardKey.comma,
   'ContextMenu': PhysicalKeyboardKey.contextMenu,
   'ControlLeft': PhysicalKeyboardKey.controlLeft,
@@ -2504,7 +2495,6 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'Enter': PhysicalKeyboardKey.enter,
   'Equal': PhysicalKeyboardKey.equal,
   'Escape': PhysicalKeyboardKey.escape,
-  'Exit': PhysicalKeyboardKey.exit,
   'F1': PhysicalKeyboardKey.f1,
   'F10': PhysicalKeyboardKey.f10,
   'F11': PhysicalKeyboardKey.f11,
@@ -2566,14 +2556,11 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'Help': PhysicalKeyboardKey.help,
   'Home': PhysicalKeyboardKey.home,
   'Hyper': PhysicalKeyboardKey.hyper,
-  'Info': PhysicalKeyboardKey.info,
   'Insert': PhysicalKeyboardKey.insert,
   'IntlBackslash': PhysicalKeyboardKey.intlBackslash,
   'IntlRo': PhysicalKeyboardKey.intlRo,
   'IntlYen': PhysicalKeyboardKey.intlYen,
   'KanaMode': PhysicalKeyboardKey.kanaMode,
-  'KbdIllumDown': PhysicalKeyboardKey.kbdIllumDown,
-  'KbdIllumUp': PhysicalKeyboardKey.kbdIllumUp,
   'KeyA': PhysicalKeyboardKey.keyA,
   'KeyB': PhysicalKeyboardKey.keyB,
   'KeyC': PhysicalKeyboardKey.keyC,
@@ -2609,25 +2596,13 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'LaunchApp1': PhysicalKeyboardKey.launchApp1,
   'LaunchApp2': PhysicalKeyboardKey.launchApp2,
   'LaunchAssistant': PhysicalKeyboardKey.launchAssistant,
-  'LaunchAudioBrowser': PhysicalKeyboardKey.launchAudioBrowser,
-  'LaunchCalendar': PhysicalKeyboardKey.launchCalendar,
-  'LaunchContacts': PhysicalKeyboardKey.launchContacts,
   'LaunchControlPanel': PhysicalKeyboardKey.launchControlPanel,
-  'LaunchDocuments': PhysicalKeyboardKey.launchDocuments,
-  'LaunchInternetBrowser': PhysicalKeyboardKey.launchInternetBrowser,
-  'LaunchKeyboardLayout': PhysicalKeyboardKey.launchKeyboardLayout,
   'LaunchMail': PhysicalKeyboardKey.launchMail,
-  'LaunchPhone': PhysicalKeyboardKey.launchPhone,
   'LaunchScreenSaver': PhysicalKeyboardKey.launchScreenSaver,
-  'LaunchSpreadsheet': PhysicalKeyboardKey.launchSpreadsheet,
-  'LaunchWordProcessor': PhysicalKeyboardKey.launchWordProcessor,
-  'LockScreen': PhysicalKeyboardKey.lockScreen,
-  'LogOff': PhysicalKeyboardKey.logOff,
   'MailForward': PhysicalKeyboardKey.mailForward,
   'MailReply': PhysicalKeyboardKey.mailReply,
   'MailSend': PhysicalKeyboardKey.mailSend,
   'MediaFastForward': PhysicalKeyboardKey.mediaFastForward,
-  'MediaLast': PhysicalKeyboardKey.mediaLast,
   'MediaPause': PhysicalKeyboardKey.mediaPause,
   'MediaPlay': PhysicalKeyboardKey.mediaPlay,
   'MediaPlayPause': PhysicalKeyboardKey.mediaPlayPause,
@@ -2641,7 +2616,6 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'MetaRight': PhysicalKeyboardKey.metaRight,
   'MicrophoneMuteToggle': PhysicalKeyboardKey.microphoneMuteToggle,
   'Minus': PhysicalKeyboardKey.minus,
-  'New': PhysicalKeyboardKey.newKey,
   'NonConvert': PhysicalKeyboardKey.nonConvert,
   'NumLock': PhysicalKeyboardKey.numLock,
   'Numpad0': PhysicalKeyboardKey.numpad0,
@@ -2671,7 +2645,6 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'NumpadMultiply': PhysicalKeyboardKey.numpadMultiply,
   'NumpadParenLeft': PhysicalKeyboardKey.numpadParenLeft,
   'NumpadParenRight': PhysicalKeyboardKey.numpadParenRight,
-  'NumpadSignChange': PhysicalKeyboardKey.numpadSignChange,
   'NumpadSubtract': PhysicalKeyboardKey.numpadSubtract,
   'Open': PhysicalKeyboardKey.open,
   'PageDown': PhysicalKeyboardKey.pageDown,
@@ -2680,15 +2653,11 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'Pause': PhysicalKeyboardKey.pause,
   'Period': PhysicalKeyboardKey.period,
   'Power': PhysicalKeyboardKey.power,
-  'Print': PhysicalKeyboardKey.print,
   'PrintScreen': PhysicalKeyboardKey.printScreen,
   'PrivacyScreenToggle': PhysicalKeyboardKey.privacyScreenToggle,
-  'ProgramGuide': PhysicalKeyboardKey.programGuide,
   'Props': PhysicalKeyboardKey.props,
   'Quote': PhysicalKeyboardKey.quote,
-  'Redo': PhysicalKeyboardKey.redo,
   'Resume': PhysicalKeyboardKey.resume,
-  'Save': PhysicalKeyboardKey.save,
   'ScrollLock': PhysicalKeyboardKey.scrollLock,
   'Select': PhysicalKeyboardKey.select,
   'SelectTask': PhysicalKeyboardKey.selectTask,
@@ -2699,20 +2668,12 @@ const Map<String, PhysicalKeyboardKey> kWebToPhysicalKey = <String, PhysicalKeyb
   'Slash': PhysicalKeyboardKey.slash,
   'Sleep': PhysicalKeyboardKey.sleep,
   'Space': PhysicalKeyboardKey.space,
-  'SpeechInputToggle': PhysicalKeyboardKey.speechInputToggle,
-  'SpellCheck': PhysicalKeyboardKey.spellCheck,
   'Super': PhysicalKeyboardKey.superKey,
   'Suspend': PhysicalKeyboardKey.suspend,
   'Tab': PhysicalKeyboardKey.tab,
   'Turbo': PhysicalKeyboardKey.turbo,
   'Undo': PhysicalKeyboardKey.undo,
-  'UsbErrorRollOver': PhysicalKeyboardKey.usbErrorRollOver,
-  'UsbErrorUndefined': PhysicalKeyboardKey.usbErrorUndefined,
-  'UsbPostFail': PhysicalKeyboardKey.usbPostFail,
-  'UsbReserved': PhysicalKeyboardKey.usbReserved,
   'WakeUp': PhysicalKeyboardKey.wakeUp,
-  'ZoomIn': PhysicalKeyboardKey.zoomIn,
-  'ZoomOut': PhysicalKeyboardKey.zoomOut,
   'ZoomToggle': PhysicalKeyboardKey.zoomToggle,
 };
 
diff --git a/packages/flutter/test/services/keyboard_maps_test.dart b/packages/flutter/test/services/keyboard_maps_test.dart
new file mode 100644
index 000000000000..197d6789ebe4
--- /dev/null
+++ b/packages/flutter/test/services/keyboard_maps_test.dart
@@ -0,0 +1,16 @@
+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('The Web physical key mapping do not have entries without a Chrome code.', () {
+    // Regression test for https://github.com/flutter/flutter/pull/106074.
+    // There is an entry called KBD_ILLUM_DOWN in dom_code_data.inc, but it
+    // has an empty "Code" column. This entry should not be present in the
+    // web mapping.
+    expect(kWebToPhysicalKey['KbdIllumDown'], isNull);
+  });
+}