Further cleanup after removing material styles.

app/test/frontend/static_files_test.dart

@@ -159,10 +159,6 @@ void main() {
           '/static/js/script.dart.js.info.data',
           '/static/js/script.dart.js.info.json',
           '/static/js/script.dart.js.map',
-          '/static/material/bundle/script.min.js.map',
-          '/static/material/bundle/styles.css.map',
-          '/static/material/bundle/script.min.js.LICENSE.txt',
-          '/static/material/bundle/styles.min.js',
         ])
         // Images that we are not currently using but keep alongside of the used version.
         ..removeAll([
@@ -175,15 +171,10 @@ void main() {
               e.startsWith('/static/js/script.dart.js_') &&
               (e.endsWith('.part.js') || e.endsWith('.part.js.map')),
         )
-        // material build parts may be present in local dev environment
-        ..removeWhere((e) => e.startsWith('/static/material/node_modules/'))
         // files that are in the third-party directory but not essential to serving
         ..removeAll([
           '/static/css/github-markdown.css-license.txt',
           '/static/highlight/readme.md',
-          '/static/material/package-lock.json',
-          '/static/material/package.json',
-          '/static/material/README.md',
         ])
         // third-party CSS files that are included in the style.scss are no longer referenced elsewhere
         ..removeAll([

pkg/web_css/lib/src/_base.scss

@@ -361,11 +361,6 @@ pre {
   display: inline-block;
 }
 
-.-pub-like-button {
-  --mdc-theme-primary: #f8f8f8;
-  --mdc-theme-on-primary: var(--pub-neutral-textColor);
-}
-
 .-pub-like-button-img {
   opacity: 0.7;
 }

pkg/web_css/lib/src/_variables.scss

@@ -84,11 +84,6 @@
   --pub-button-cancel-background: #f0f0f0;
   --pub-button-cancel-text-color: #000000;
 
-  // Material Design theme customizations
-  --mdc-theme-primary: #1967d2;
-  --mdc-theme-secondary: #0066d9;
-  --mdc-typography-font-family: var(--pub-font-family-body);
-
   --pub-downloads-chart-color-0: var(--pub-markdown-alert-note);
   --pub-downloads-chart-color-bg-0: rgb(9, 105, 218, 0.3);
   --pub-downloads-chart-color-1: var(--pub-markdown-alert-caution);
@@ -222,16 +217,6 @@
   --pub-downloads-chart-frame-color: #55585a;
   --pub-downloads-chart-tooltip-background: rgba(18, 19, 23, 0.9);
 
-  // Material Design theme customizations
-  --mdc-theme-surface: var(--pub-neutral-bgColor);
-  --mdc-theme-on-primary: var(--pub-neutral-textColor);
-  --mdc-theme-on-secondary: var(--pub-neutral-textColor);
-  --mdc-theme-on-surface: var(--pub-neutral-textColor);
-  --mdc-filled-button-container-color: rgba(255, 255, 255, 0.1);
-  --mdc-filled-button-label-text-color: var(--pub-neutral-textColor);
-  --mdc-protected-button-disabled-container-color: rgba(255, 255, 255, 0.1);
-  --mdc-protected-button-disabled-label-text-color: var(--pub-neutral-textColor);
-
   // Most of our SVG images are black on transparent background and they
   // are almost invisible in dark mode. Ideally we would have different
   // images for dark mode, or override their `fill` or `stroke` properties

pkg/web_css/test/variables_test.dart

@@ -50,9 +50,6 @@ void main() {
         await File('lib/src/_variables.scss').readAsLines(),
       ).toSet();
 
-      // remove Material design variables
-      variables.removeWhere((v) => v.startsWith('--mdc-'));
-
       for (final f
           in Directory('../../third_party/site-shared/dash_design/lib/')
               .listSync(recursive: true)
@@ -104,10 +101,6 @@ void main() {
         for (final m in varRegExp.allMatches(content)) {
           final name = m.group(1)!.trim();
           if (!variables.contains(name)) {
-            // exempt Material Design variables
-            if (name.startsWith('--mdc-')) {
-              continue;
-            }
             // exempt known dash variables
             if (name.startsWith('--dash-') && dashVariables.contains(name)) {
               continue;