Added tokens for Snackbar widget. (#114466)

Author: darrenaustin

dev/tools/gen_defaults/bin/gen_defaults.dart

@@ -52,6 +52,7 @@ Map<String, dynamic> _readTokenFile(String fileName) {
 Future<void> main(List<String> args) async {
   const String materialLib = 'packages/flutter/lib/src/material';
   const List<String> tokenFiles = <String>[
+    'badge.json',
     'banner.json',
     'bottom_app_bar.json',
     'button_elevated.json',
@@ -72,8 +73,8 @@ Future<void> main(List<String> args) async {
     'date_picker_docked.json',
     'date_picker_modal.json',
     'dialog.json',
-    'divider.json',
     'dialog_fullscreen.json',
+    'divider.json',
     'elevation.json',
     'fab_extended_primary.json',
     'fab_large_primary.json',
@@ -83,11 +84,13 @@ Future<void> main(List<String> args) async {
     'icon_button_filled.json',
     'icon_button_filled_tonal.json',
     'icon_button_outlined.json',
+    'list.json',
     'menu.json',
     'motion.json',
     'navigation_bar.json',
     'navigation_drawer.json',
     'navigation_rail.json',
+    'navigation_tab_primary.json',
     'palette.json',
     'progress_indicator_circular.json',
     'progress_indicator_linear.json',
@@ -96,6 +99,7 @@ Future<void> main(List<String> args) async {
     'shape.json',
     'sheet_bottom.json',
     'slider.json',
+    'snackbar.json',
     'state.json',
     'switch.json',
     'text_field_filled.json',

dev/tools/gen_defaults/data/snackbar.json

@@ -0,0 +1,34 @@
+{
+  "version": "v0_137",
+
+  "md.comp.snackbar.action.focus.label-text.color": "inversePrimary",
+  "md.comp.snackbar.action.focus.state-layer.color": "inversePrimary",
+  "md.comp.snackbar.action.focus.state-layer.opacity": "md.sys.state.focus.state-layer-opacity",
+  "md.comp.snackbar.action.hover.label-text.color": "inversePrimary",
+  "md.comp.snackbar.action.hover.state-layer.color": "inversePrimary",
+  "md.comp.snackbar.action.hover.state-layer.opacity": "md.sys.state.hover.state-layer-opacity",
+  "md.comp.snackbar.action.label-text.color": "inversePrimary",
+  "md.comp.snackbar.action.label-text.text-style": "labelLarge",
+  "md.comp.snackbar.action.pressed.label-text.color": "inversePrimary",
+  "md.comp.snackbar.action.pressed.state-layer.color": "inversePrimary",
+  "md.comp.snackbar.action.pressed.state-layer.opacity": "md.sys.state.pressed.state-layer-opacity",
+  "md.comp.snackbar.container.color": "inverseSurface",
+  "md.comp.snackbar.container.elevation": "md.sys.elevation.level3",
+  "md.comp.snackbar.container.shadow-color": "shadow",
+  "md.comp.snackbar.container.shape": "md.sys.shape.corner.extra-small",
+  "md.comp.snackbar.icon.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.focus.icon.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.focus.state-layer.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.focus.state-layer.opacity": "md.sys.state.focus.state-layer-opacity",
+  "md.comp.snackbar.icon.hover.icon.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.hover.state-layer.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.hover.state-layer.opacity": "md.sys.state.hover.state-layer-opacity",
+  "md.comp.snackbar.icon.pressed.icon.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.pressed.state-layer.color": "inverseOnSurface",
+  "md.comp.snackbar.icon.pressed.state-layer.opacity": "md.sys.state.pressed.state-layer-opacity",
+  "md.comp.snackbar.icon.size": 24.0,
+  "md.comp.snackbar.supporting-text.color": "inverseOnSurface",
+  "md.comp.snackbar.supporting-text.text-style": "bodyMedium",
+  "md.comp.snackbar.with-single-line.container.height": 48.0,
+  "md.comp.snackbar.with-two-lines.container.height": 68.0
+}