Add the button style for combobox

ui/views/controls/button/label_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/label_button.h"
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/animation/throb_animation.h"
 #include "ui/gfx/sys_color_change_listener.h"
 #include "ui/native_theme/native_theme.h"
 #include "ui/views/controls/button/label_button_border.h"
 #include "ui/views/focus_border.h"
 #include "ui/views/window/dialog_delegate.h"
 
 #if defined(OS_WIN)
 #include "ui/native_theme/native_theme_win.h"
 #endif
 
 namespace {
 
 // The spacing between the icon and text.
 const int kSpacing = 5;
 
-// The length of the hover fade animation.
-const int kHoverAnimationDurationMs = 170;
-
 // Default text and shadow colors for STYLE_BUTTON.
 const SkColor kStyleButtonTextColor = SK_ColorBLACK;
 const SkColor kStyleButtonShadowColor = SK_ColorWHITE;
 
 }  // namespace
 
 namespace views {
 
 // static
+const int LabelButton::kHoverAnimationDurationMs = 170;
+
+// static
 const char LabelButton::kViewClassName[] = "LabelButton";
 
 LabelButton::LabelButton(ButtonListener* listener, const string16& text)
     : CustomButton(listener),
       image_(new ImageView()),
       label_(new Label()),
       button_state_images_(),
       button_state_colors_(),
       explicitly_set_colors_(),
       is_default_(false),
@@ skipping 333 matching lines @@
   return ui::NativeTheme::kNormal;
 }
 
 ui::NativeTheme::State LabelButton::GetForegroundThemeState(
     ui::NativeTheme::ExtraParams* params) const {
   GetExtraParams(params);
   return ui::NativeTheme::kHovered;
 }
 
 }  // namespace views