* feat: add nativeTheme.shouldUseDarkColorsOverride to allow apps to override Chromiums theme choice
* spec: add tests for shouldUseDarkColorsOverride
* chore: add missing forward declarations
* refactor: rename overrideShouldUseDarkColors to themeSource
* chore: only run appLevelAppearance specs on Mojave and up
* chore: update patch with more info and no define
* Update spec-main/api-native-theme-spec.ts
Co-Authored-By: Jeremy Apthorp <jeremya@chromium.org>
* Update api-native-theme-spec.ts
* Update api-native-theme-spec.ts
* Update api-native-theme-spec.ts
