Ensure UI elements contrast with the right frame color.

chrome/browser/themes/theme_service_win.h

Index: chrome/browser/themes/theme_service_win.h
diff --git a/chrome/browser/themes/theme_service_win.h b/chrome/browser/themes/theme_service_win.h
index de91fc63fef9830ea5692a46fab3df5f552f9d60..baa1c33fccf44d7850596f9486204c14dd4edf0a 100644
--- a/chrome/browser/themes/theme_service_win.h
+++ b/chrome/browser/themes/theme_service_win.h
@@ -40,6 +40,10 @@ class ThemeServiceWin : public ThemeService {
   // The frame color when active.
   SkColor dwm_frame_color_;
 
+  // True if we took dwm_inactive_frame_color_ from the registry (vs calculating
+  // it ourselves) and thus Windows will use it too.
+  bool inactive_frame_color_from_registry_;
+
   // The frame color when inactive.
   SkColor dwm_inactive_frame_color_;