Replace hard-coded colors from ui::NativeTheme for consistency and accessibility.

chrome/browser/ui/autofill/autofill_popup_layout_model.cc

Index: chrome/browser/ui/autofill/autofill_popup_layout_model.cc
diff --git a/chrome/browser/ui/autofill/autofill_popup_layout_model.cc b/chrome/browser/ui/autofill/autofill_popup_layout_model.cc
index 6746c1655d75d1bda47058e7b3bd6e3dc3b39a6a..a481c95c2d0f6a129a48c37d7e2b4500209fa565 100644
--- a/chrome/browser/ui/autofill/autofill_popup_layout_model.cc
+++ b/chrome/browser/ui/autofill/autofill_popup_layout_model.cc
@@ -191,15 +191,16 @@ const gfx::FontList& AutofillPopupLayoutModel::GetLabelFontListForRow(
   return smaller_font_list_;
 }
 
-SkColor AutofillPopupLayoutModel::GetValueFontColorForRow(size_t index) const {
+ui::NativeTheme::ColorId AutofillPopupLayoutModel::GetValueFontColorIDForRow(
+    size_t index) const {
   std::vector<autofill::Suggestion> suggestions = delegate_->GetSuggestions();
   switch (suggestions[index].frontend_id) {
     case POPUP_ITEM_ID_HTTP_NOT_SECURE_WARNING_MESSAGE:
-      return gfx::kGoogleRed700;
+      return ui::NativeTheme::kColorId_AlertSeverityHigh;
     case POPUP_ITEM_ID_INSECURE_CONTEXT_PAYMENT_DISABLED_MESSAGE:
-      return kLabelTextColor;
+      return ui::NativeTheme::kColorId_ResultsTableNormalDimmedText;
     default:
-      return kValueTextColor;
+      return ui::NativeTheme::kColorId_ResultsTableNormalText;
   }
 }