Make LabelButton::SetFontList protected.

chrome/browser/ui/views/profiles/new_avatar_button.cc

Index: chrome/browser/ui/views/profiles/new_avatar_button.cc
diff --git a/chrome/browser/ui/views/profiles/new_avatar_button.cc b/chrome/browser/ui/views/profiles/new_avatar_button.cc
index 0b7b45afe11cf6040a3b3d585b4865dd0909667b..160c44fccb1ca4e94fccd6885a76a2a813d6686d 100644
--- a/chrome/browser/ui/views/profiles/new_avatar_button.cc
+++ b/chrome/browser/ui/views/profiles/new_avatar_button.cc
@@ -70,7 +70,8 @@ NewAvatarButton::NewAvatarButton(AvatarButtonDelegate* delegate,
   // is larger than this, it will be shrunk to match it.
   // TODO(noms): Calculate this constant algorithmically from the button's size.
   const int kDisplayFontHeight = 16;
-  SetFontList(GetFontList().DeriveWithHeightUpperBound(kDisplayFontHeight));
+  SetFontList(
+      label()->font_list().DeriveWithHeightUpperBound(kDisplayFontHeight));
 
   ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
   if (button_style == AvatarButtonStyle::THEMED) {