fix(material/core): restore private- mixin prefix

* In #21204 the `private-` prefix was unintentionally removed from all of the symbols. These changes restore the prefix.
* Fixes the prefixes on the expansion panel theming mixins.

scripts/migrate-sass-modules.js

@@ -27,7 +27,7 @@ const materialPrefixes = [
   'mat-pseudo-checkbox-',
   'mat-elevation-',
   'mat-optgroup-',
-  'mat-private-'
+  'mat-expansion-panel-'
 ];
 const mdcPrefixes = [
   ...getPrefixes('material-experimental', 'mat'),

src/material-experimental/column-resize/_column-resize.scss

@@ -105,8 +105,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-column-resize') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-column-resize') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-autocomplete/_autocomplete-theme.scss

@@ -27,8 +27,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-autocomplete') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-autocomplete') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-button/_button-theme.scss

@@ -190,8 +190,8 @@ $mat-button-state-target: '.mdc-button__ripple';
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-button') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-button') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);
@@ -269,8 +269,8 @@ $mat-button-state-target: '.mdc-button__ripple';
 @mixin fab-density($config-or-theme) {}
 
 @mixin fab-theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-fab') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-fab') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);
@@ -347,8 +347,8 @@ $mat-button-state-target: '.mdc-button__ripple';
 }
 
 @mixin icon-button-theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-icon-button') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-icon-button') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-card/_card-theme.scss

@@ -54,8 +54,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-card') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-card') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-checkbox/_checkbox-theme.scss

@@ -144,8 +144,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-checkbox') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-checkbox') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-chips/_chips-theme.scss

@@ -91,8 +91,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-chips') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-chips') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-color/_all-color.scss

@@ -4,7 +4,7 @@
 @mixin angular-material-mdc-color($config-or-theme) {
   // In case a theme object has been passed instead of a configuration for
   // the color system, extract the color config from the theme object.
-  $config: if(theming.is-theme-object($config-or-theme),
+  $config: if(theming.private-is-theme-object($config-or-theme),
       theming.get-color-config($config-or-theme), $config-or-theme);
 
   @if $config == null {

src/material-experimental/mdc-core/_core-theme.scss

@@ -4,11 +4,11 @@
 
 // Mixin that renders all of the core styles that depend on the theme.
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
   // Wrap the sub-theme includes in the duplicate theme styles mixin. This ensures that
   // there won't be multiple warnings. e.g. if `mat-mdc-core-theme` reports a warning, then
   // the imported themes (such as `mat-ripple-theme`) should not report again.
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-core') {
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-core') {
     @include option-theme.option-theme($theme);
     @include optgroup-theme.theme($theme);
   }

src/material-experimental/mdc-core/option/_optgroup-theme.scss

@@ -28,8 +28,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-optgroup') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-optgroup') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-core/option/_option-theme.scss

@@ -62,8 +62,8 @@
 }
 
 @mixin option-theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-option') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-option') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-density/_all-density.scss

@@ -4,7 +4,7 @@
 @mixin angular-material-mdc-density($config-or-theme) {
   // In case a theme object has been passed instead of a configuration for
   // the density system, extract the density config from the theme object.
-  $config: if(theming.is-theme-object($config-or-theme),
+  $config: if(theming.private-is-theme-object($config-or-theme),
       theming.get-density-config($config-or-theme), $config-or-theme);
 
   @if $config == null {

src/material-experimental/mdc-dialog/_dialog-theme.scss

@@ -22,8 +22,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-dialog') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-dialog') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-form-field/_form-field-theme.scss

@@ -88,8 +88,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-form-field') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-form-field') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-helpers/_focus-indicators.scss

@@ -122,8 +122,9 @@
     @include _mat-mdc-strong-focus-indicators-border-color($theme-or-color);
   }
   @else {
-    $theme: theming.legacy-get-theme($theme-or-color);
-    @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-strong-focus-indicators') {
+    $theme: theming.private-legacy-get-theme($theme-or-color);
+    @include theming.private-check-duplicate-theme-styles($theme,
+      'mat-mdc-strong-focus-indicators') {
       $color: theming.get-color-config($theme);
       @if $color != null {
         @include strong-focus-indicators-color($color);

src/material-experimental/mdc-helpers/_mdc-helpers.scss

@@ -94,7 +94,7 @@ $mat-typography-2018-level-mappings: (
 
 // Converts an Angular Material typography level config to an MDC one.
 @function mat-typography-level-config-to-mdc($mat-config, $mat-level) {
-  $mappings: if(typography.typography-is-2018-config($mat-config),
+  $mappings: if(typography.private-typography-is-2018-config($mat-config),
       $mat-typography-2018-level-mappings, $mat-typography-2014-level-mappings);
   $mdc-level: map.get(map.get($mappings, mat-to-mdc), $mat-level);
 
@@ -133,7 +133,7 @@ $mat-typography-2018-level-mappings: (
 @function mat-typography-config-to-mdc($mat-config: typography.config()) {
   $mdc-config: ();
 
-  $mappings: if(typography.typography-is-2018-config($mat-config),
+  $mappings: if(typography.private-typography-is-2018-config($mat-config),
       $mat-typography-2018-level-mappings, $mat-typography-2014-level-mappings);
 
   @each $mdc-level, $mat-level in map.get($mappings, mdc-to-mat) {

src/material-experimental/mdc-input/_input-theme.scss

@@ -14,8 +14,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-input') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-input') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-list/_list-theme.scss

@@ -61,8 +61,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-list') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-list') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-menu/_menu-theme.scss

@@ -66,8 +66,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-menu') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-menu') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-paginator/_paginator-theme.scss

@@ -64,19 +64,19 @@
 
 @mixin density($config-or-theme) {
   $density-scale: theming.get-density-config($config-or-theme);
-  $height: compatibility.density-prop-value(
+  $height: compatibility.private-density-prop-value(
       paginator-variables.$density-config, $density-scale, height);
 
-  @include compatibility.density-legacy-compatibility() {
+  @include compatibility.private-density-legacy-compatibility() {
     .mat-mdc-paginator-container {
       min-height: $height;
     }
   }
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-paginator') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-paginator') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-progress-bar/_progress-bar-theme.scss

@@ -37,8 +37,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-progress-bar') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-progress-bar') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-progress-spinner/_progress-spinner-theme.scss

@@ -28,8 +28,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-progress-spinner') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-progress-spinner') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-radio/_radio-theme.scss

@@ -58,8 +58,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-radio') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-radio') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-select/_select-theme.scss

@@ -101,8 +101,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-select') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-select') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-sidenav/_sidenav-theme.scss

@@ -10,8 +10,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-sidenav') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-sidenav') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-slide-toggle/_slide-toggle-theme.scss

@@ -96,8 +96,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-slide-toggle') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-slide-toggle') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-slider/_slider-theme.scss

@@ -34,8 +34,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-slider') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-slider') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-snack-bar/_snack-bar-theme.scss

@@ -53,8 +53,8 @@
 @mixin density($config-or-theme) {}
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-snack-bar') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-snack-bar') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-table/_table-theme.scss

@@ -59,8 +59,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-table') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-table') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-table/table.scss

@@ -4,7 +4,7 @@
 @import '@material/data-table/mixins.import';
 
 @include mdc-data-table-core-styles($query: mdc-helpers.$mat-base-styles-without-animation-query);
-@include table-flex-styles.table-flex-styles();
+@include table-flex-styles.private-table-flex-styles();
 
 .mat-mdc-table-sticky {
   // Note that the table can either set this class or an inline style to make something sticky.

src/material-experimental/mdc-tabs/_tabs-theme.scss

@@ -118,8 +118,8 @@
 }
 
 @mixin theme($theme-or-color-config) {
-  $theme: theming.legacy-get-theme($theme-or-color-config);
-  @include theming.check-duplicate-theme-styles($theme, 'mat-mdc-tabs') {
+  $theme: theming.private-legacy-get-theme($theme-or-color-config);
+  @include theming.private-check-duplicate-theme-styles($theme, 'mat-mdc-tabs') {
     $color: theming.get-color-config($theme);
     $density: theming.get-density-config($theme);
     $typography: theming.get-typography-config($theme);

src/material-experimental/mdc-tabs/tab-group.scss

@@ -39,7 +39,7 @@
 
 // The bottom section of the view; contains the tab bodies
 .mat-mdc-tab-body-wrapper {
-  @include private.animation-noop();
+  @include private.private-animation-noop();
   position: relative;
   overflow: hidden;
   display: flex;

src/material-experimental/mdc-theming/_all-theme.scss

@@ -24,7 +24,7 @@
 
 @mixin angular-material-mdc-theme($theme-or-color-config) {
   $dedupe-key: 'angular-material-mdc-theme';
-  @include theming.check-duplicate-theme-styles($theme-or-color-config, $dedupe-key) {
+  @include theming.private-check-duplicate-theme-styles($theme-or-color-config, $dedupe-key) {
     @include core-theme.theme($theme-or-color-config);
     @include autocomplete-theme.theme($theme-or-color-config);
     @include button-theme.theme($theme-or-color-config);