Make all the menu UI consitent with the new chromeos menu spec.

ui/gfx/native_theme_win.cc

Index: ui/gfx/native_theme_win.cc
diff --git a/ui/gfx/native_theme_win.cc b/ui/gfx/native_theme_win.cc
index 775385cec264974738f1e15da8051988c7f10ade..8182cc17e244b93160fe760ddab08e86cc13b436 100644
--- a/ui/gfx/native_theme_win.cc
+++ b/ui/gfx/native_theme_win.cc
@@ -22,6 +22,7 @@
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColorPriv.h"
 #include "third_party/skia/include/core/SkShader.h"
+#include "ui/gfx/color_utils.h"
 #include "ui/gfx/gdi_util.h"
 #include "ui/gfx/rect.h"
 
@@ -45,6 +46,10 @@ const SkColor kTextButtonHoverColor = kTextButtonEnabledColor;
 const SkColor kEnabledMenuItemForegroundColor = kTextButtonEnabledColor;
 const SkColor kDisabledMenuItemForegroundColor = kTextButtonDisabledColor;
 const SkColor kFocusedMenuItemBackgroundColor = SkColorSetRGB(246, 249, 253);
+// Label:
+const SkColor kLabelEnabledColor = color_utils::GetSysSkColor(COLOR_WINDOWTEXT);
+const SkColor kLabelDisabledColor = color_utils::GetSysSkColor(COLOR_GRAYTEXT);
+const SkColor kLabelBackgroundColor = color_utils::GetSysSkColor(COLOR_WINDOW);
 // Textfield:
 const SkColor kTextfieldDefaultColor = SK_ColorBLACK;
 const SkColor kTextfieldDefaultBackground = SK_ColorWHITE;
@@ -399,6 +404,14 @@ SkColor NativeThemeWin::GetSystemColor(ColorId color_id) const {
     case kColorId_FocusedMenuItemBackgroundColor:
       return kFocusedMenuItemBackgroundColor;
 
+    // Label
+    case kColorId_LabelEnabledColor:
+      return kLabelEnabledColor;
+    case kColorId_LabelDisabledColor:
+      return kLabelDisabledColor;
+    case kColorId_LabelBackgroundColor:
+      return kLabelBackgroundColor;
+
     // Textfield
     case kColorId_TextfieldDefaultColor:
       return kTextfieldDefaultColor;