chore: remove deprecated systemPreferences APIs (#39696)

docs/api/system-preferences.md

@@ -273,7 +273,6 @@ This API is only available on macOS 10.14 Mojave or newer.
     * `window-frame` - Window frame.
     * `window-text` - Text in windows.
   * On **macOS**
-    * `alternate-selected-control-text` - The text on a selected surface in a list or table. _Deprecated_
     * `control-background` - The background of a large interface element, such as a browser or table.
     * `control` - The surface of a control.
     * `control-text` -The text of a control that isn’t disabled.
@@ -339,21 +338,6 @@ Returns `string` - Can be `dark`, `light` or `unknown`.
 Gets the macOS appearance setting that is currently applied to your application,
 maps to [NSApplication.effectiveAppearance](https://developer.apple.com/documentation/appkit/nsapplication/2967171-effectiveappearance?language=objc)
 
-### `systemPreferences.getAppLevelAppearance()` _macOS_ _Deprecated_
-
-Returns `string` | `null` - Can be `dark`, `light` or `unknown`.
-
-Gets the macOS appearance setting that you have declared you want for
-your application, maps to [NSApplication.appearance](https://developer.apple.com/documentation/appkit/nsapplication/2967170-appearance?language=objc).
-You can use the `setAppLevelAppearance` API to set this value.
-
-### `systemPreferences.setAppLevelAppearance(appearance)` _macOS_ _Deprecated_
-
-* `appearance` string | null - Can be `dark` or `light`
-
-Sets the appearance setting for your application, this should override the
-system default and override the value of `getEffectiveAppearance`.
-
 ### `systemPreferences.canPromptTouchID()` _macOS_
 
 Returns `boolean` - whether or not this device has the ability to use Touch ID.
@@ -417,16 +401,6 @@ Returns an object with system animation settings.
 
 ## Properties
 
-### `systemPreferences.appLevelAppearance` _macOS_ _Deprecated_
-
-A `string` property that can be `dark`, `light` or `unknown`. It determines the macOS appearance setting for
-your application. This maps to values in: [NSApplication.appearance](https://developer.apple.com/documentation/appkit/nsapplication/2967170-appearance?language=objc). Setting this will override the
-system default as well as the value of `getEffectiveAppearance`.
-
-Possible values that can be set are `dark` and `light`, and possible return values are `dark`, `light`, and `unknown`.
-
-This property is only available on macOS 10.14 Mojave or newer.
-
 ### `systemPreferences.effectiveAppearance` _macOS_ _Readonly_
 
 A `string` property that can be `dark`, `light` or `unknown`.

docs/breaking-changes.md

@@ -107,6 +107,41 @@ w.webContents.getPrintersAsync().then((printers) => {
 })
 ```
 
+### Removed: `systemPreferences.{get,set}AppLevelAppearance` and `systemPreferences.appLevelAppearance`
+
+The `systemPreferences.getAppLevelAppearance` and `systemPreferences.setAppLevelAppearance`
+methods have been removed, as well as the `systemPreferences.appLevelAppearance` property.
+Use the `nativeTheme` module instead.
+
+```js
+// Removed
+systemPreferences.getAppLevelAppearance()
+// Replace with
+nativeTheme.shouldUseDarkColors
+
+// Removed
+systemPreferences.appLevelAppearance
+// Replace with
+nativeTheme.shouldUseDarkColors
+
+// Removed
+systemPreferences.setAppLevelAppearance('dark')
+// Replace with
+nativeTheme.themeSource = 'dark'
+```
+
+### Removed: `alternate-selected-control-text` value for `systemPreferences.getColor`
+
+The `alternate-selected-control-text` value for `systemPreferences.getColor`
+has been removed. Use `selected-content-background` instead.
+
+```js
+// Removed
+systemPreferences.getColor('alternate-selected-control-text')
+// Replace with
+systemPreferences.getColor('selected-content-background')
+```
+
 ## Planned Breaking API Changes (26.0)
 
 ### Deprecated: `webContents.getPrinters`