chrome/browser/win/titlebar_config.cc

// Copyright 2016 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/win/titlebar_config.h"

#include "base/command_line.h"
#include "base/win/windows_version.h"
#include "chrome/common/chrome_switches.h"
#include "ui/native_theme/native_theme_win.h"

bool ShouldCustomDrawSystemTitlebar() {
  // Cache flag lookup.
  static const bool custom_titlebar_disabled =
      base::CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kDisableWindows10CustomTitlebar);

  // TODO(bsep): We would like the custom-draw the titlebar in high-contrast
  // mode so that we can correctly draw the caption buttons on the left in RTL
  // mode. But they require a different style and color selection that isn't
  // currently implemented.
  return !custom_titlebar_disabled &&
         !ui::NativeTheme::GetInstanceForNativeUi()->UsesHighContrastColors() &&
         base::win::GetVersion() >= base::win::Version::WIN10;
}