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

ui/views/controls/button/label_button.cc

Index: ui/views/controls/button/label_button.cc
diff --git a/ui/views/controls/button/label_button.cc b/ui/views/controls/button/label_button.cc
index 0cfd1a41a7feadb4572d8e659313359fe1cbab3d..9032db94be4dad05b18492d8ea853d5788c3c2a7 100644
--- a/ui/views/controls/button/label_button.cc
+++ b/ui/views/controls/button/label_button.cc
@@ -165,12 +165,7 @@ void LabelButton::SetStyle(ButtonStyle style) {
   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) {
@@ -379,6 +374,9 @@ void LabelButton::ChildPreferredSizeChanged(View* child) {
 
 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 {