Add kColorId_EnabledMenuItemForegroundColor to the Common Theme Aura Dark Mode List

Menus on Windows use the Aura colors.

BUG=928378

Change-Id: Ib49917e4902f06e2423048a07bea4447e07ecf10
Reviewed-on: https://chromium-review.googlesource.com/c/1455625
Auto-Submit: Robert Liao <robliao@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629544}

ui/native_theme/common_theme.cc

@@ -44,6 +44,7 @@ SkColor GetAuraColor(NativeTheme::ColorId color_id,
     switch (color_id) {
       case NativeTheme::kColorId_LabelEnabledColor:
       case NativeTheme::kColorId_TextfieldDefaultColor:
+      case NativeTheme::kColorId_EnabledMenuItemForegroundColor:
       case NativeTheme::kColorId_SelectedMenuItemForegroundColor:
       case NativeTheme::kColorId_HighlightedMenuItemForegroundColor:
         return gfx::kGoogleGrey200;