[Autofill] Credit Card Signin promo: no bg color, no smaller font.

chrome/browser/ui/autofill/autofill_popup_controller_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/autofill/autofill_popup_controller_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 364 matching lines @@
   } else {
     Hide();
   }
 
   return true;
 }
 
 SkColor AutofillPopupControllerImpl::GetBackgroundColorForRow(int index) const {
   if (index == selected_line_)
     return kHoveredBackgroundColor;
-  if (suggestions_[index].frontend_id ==
-      POPUP_ITEM_ID_CREDIT_CARD_SIGNIN_PROMO) {
-    return kPromoPopupBackground;
-  }
 
   return SK_ColorTRANSPARENT;
 }
 
 int AutofillPopupControllerImpl::selected_line() const {
   return selected_line_;
 }
 
 const AutofillPopupLayoutModel& AutofillPopupControllerImpl::layout_model()
     const {
@@ skipping 137 matching lines @@
   // Don't clear view_, because otherwise the popup will have to get regenerated
   // and this will cause flickering.
   suggestions_.clear();
   elided_values_.clear();
   elided_labels_.clear();
 
   selected_line_ = kNoSelection;
 }
 
 }  // namespace autofill