Linux Aura: Use appropriate button style depending on aura/gtk NativeTheme

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"
@@ skipping 147 matching lines @@
     SetFocusPainter(Painter::CreateDashedFocusPainterWithInsets(
                         gfx::Insets(3, 3, 3, 3)));
   }
   if (style == STYLE_BUTTON) {
     label_->SetHorizontalAlignment(gfx::ALIGN_CENTER);
     SetFocusable(true);
   }
   if (style == STYLE_BUTTON)
     set_min_size(gfx::Size(70, 33));
 
-  ResetColorsFromNativeTheme();
-
-  UpdateThemedBorder(scoped_ptr<Border>(new LabelButtonBorder(style_)));
-
-  // Invalidate the layout to pickup the new insets from the border.
-  InvalidateLayout();
+  OnNativeThemeChanged(GetNativeTheme());
 }
 
 void LabelButton::SetFocusPainter(scoped_ptr<Painter> focus_painter) {
   focus_painter_ = focus_painter.Pass();
 }
 
 gfx::Size LabelButton::GetPreferredSize() {
   // Use a temporary label copy for sizing to avoid calculation side-effects.
   Label label(GetText(), cached_normal_font_list_);
   label.SetMultiLine(GetTextMultiLine());
@@ skipping 188 matching lines @@
   if (image_->GetPreferredSize() != previous_image_size)
     Layout();
 }
 
 void LabelButton::ChildPreferredSizeChanged(View* child) {
   PreferredSizeChanged();
 }
 
 void LabelButton::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   ResetColorsFromNativeTheme();
+  UpdateThemedBorder(scoped_ptr<Border>(new LabelButtonBorder(style_)));
+  // Invalidate the layout to pickup the new insets from the border.
+  InvalidateLayout();
 }
 
 ui::NativeTheme::Part LabelButton::GetThemePart() const {
   return ui::NativeTheme::kPushButton;
 }
 
 gfx::Rect LabelButton::GetThemePaintRect() const {
   return GetLocalBounds();
 }
 
@@ skipping 20 matching lines @@
   return ui::NativeTheme::kNormal;
 }
 
 ui::NativeTheme::State LabelButton::GetForegroundThemeState(
     ui::NativeTheme::ExtraParams* params) const {
   GetExtraParams(params);
   return ui::NativeTheme::kHovered;
 }
 
 }  // namespace views