Write a NativeThemeGtk2 class for linux_aura.

ui/views/controls/button/text_button.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/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
@@ skipping 758 matching lines @@
 
 gfx::Size NativeTextButton::GetMinimumSize() {
   return GetPreferredSize();
 }
 
 std::string NativeTextButton::GetClassName() const {
   return kViewClassName;
 }
 
 void NativeTextButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
+  TextButtonBase::OnNativeThemeChanged(theme);
   SetThemeSpecificState(theme);
 }
 
 void NativeTextButton::SetThemeSpecificState(const ui::NativeTheme* theme) {
 #if defined(OS_WIN)
   if (theme == ui::NativeThemeWin::instance()) {
     if (use_enabled_color_from_theme())
       set_color_enabled(skia::COLORREFToSkColor(GetSysColor(COLOR_BTNTEXT)));
     if (use_disabled_color_from_theme())
       set_color_disabled(skia::COLORREFToSkColor(GetSysColor(COLOR_GRAYTEXT)));
@@ skipping 22 matching lines @@
   // when not using NativeThemeWin.
 #if defined(OS_WIN)
   if (GetNativeTheme() == ui::NativeThemeWin::instance())
     return;
 #endif
   params->button.is_focused = HasFocus() &&
       (focusable() || IsAccessibilityFocusable());
 }
 
 }  // namespace views