http: optimize HTTP request thread we don't need a mutex at all, in fact all we need is an atomic boolean to signify whether the thread is cancelled. curl options are now for the most part handled by a separate function to keep them in sync between non-threaded and threaded implementations

#ifndef MINORI_SYS_OSX_DARK_THEME_H_
#define MINORI_SYS_OSX_DARK_THEME_H_

namespace osx {

bool DarkThemeAvailable();
bool IsInDarkTheme();
bool SetToDarkTheme();
bool SetToLightTheme();
void SetToAutoTheme();

} // namespace osx

#endif // MINORI_SYS_OSX_DARK_THEME_H_