Safari Technology Preview now supports dark mode via `@media (prefers-color-scheme: dark)` in CSS media queries. 

Same should be supported in Electron apps to enable automatic light/dark mode switching.

shell/browser/atom_browser_client.cc
#include "net/ssl/client_cert_store_win.h"
#elif defined(OS_MACOSX)
#include "net/ssl/client_cert_store_mac.h"
#include "services/audio/public/mojom/constants.mojom.h"
#include "services/video_capture/public/mojom/constants.mojom.h"
#elif defined(USE_OPENSSL)
#include "net/ssl/client_cert_store.h"
#endif
#if BUILDFLAG(ENABLE_PEPPER_FLASH)
#include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
#endif  
#if BUILDFLAG(OVERRIDE_LOCATION_PROVIDER)
#include "shell/browser/fake_location_provider.h"
#endif  
#if BUILDFLAG(ENABLE_TTS)
#include "chrome/browser/speech/tts_controller_delegate_impl.h"
#include "chrome/browser/speech/tts_message_filter.h"
#endif  
#if BUILDFLAG(ENABLE_PRINTING)
#include "chrome/browser/printing/printing_message_filter.h"
#endif  
#if defined(OS_MACOSX)
#include "content/common/mac_helpers.h"
#include "content/public/common/child_process_host.h"
#endif
using content::BrowserThread;
namespace electron {
namespace {
bool g_suppress_renderer_process_restart = false;
bool IsSameWebSite(content::BrowserContext* browser_context,