Add views::Button style enum for LabelButton [native] styling, etc.

chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc

Index: chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc
diff --git a/chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc b/chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc
index 72a4adbde4659a1b7fa4685ddd1fa598ee1fc0ba..fb8f2a391096a8bb8d19201d958f24e82bedb13e 100644
--- a/chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc
+++ b/chrome/browser/ui/views/autofill/autocheckout_bubble_views.cc
@@ -89,10 +89,10 @@ void AutocheckoutBubbleViews::Init() {
                 0);
   layout->StartRow(0, 2);
   ok_button_ = new views::LabelButton(this, ASCIIToUTF16(kAcceptText));
-  ok_button_->SetNativeTheme(true);
+  ok_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
   layout->AddView(ok_button_);
   cancel_button_ = new views::LabelButton(this, ASCIIToUTF16(kCancelText));
-  cancel_button_->SetNativeTheme(true);
+  cancel_button_->SetStyle(views::Button::STYLE_NATIVE_TEXTBUTTON);
   layout->AddView(cancel_button_);
 }