Native Themes: Add table header colors

ui/views/background.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 "ui/views/background.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "ui/gfx/canvas.h"
@@ skipping 61 matching lines @@
   return new SolidBackground(color);
 }
 
 // static
 Background* Background::CreateStandardPanelBackground() {
   // TODO(beng): Should be in NativeTheme.
   return CreateSolidBackground(SK_ColorWHITE);
 }
 
 // static
-Background* Background::CreateVerticalGradientBackground(SkColor color1,
-                                                         SkColor color2) {
-  Background* background =
-      CreateBackgroundPainter(Painter::CreateVerticalGradient(color1, color2));
-  background->SetNativeControlColor(
-      color_utils::AlphaBlend(color1, color2, 128));
-
-  return background;
-}
-
-// static
 Background* Background::CreateBackgroundPainter(
     std::unique_ptr<Painter> painter) {
   return new BackgroundPainter(std::move(painter));
 }
 
 }  // namespace views