MD - use new style of text button in infobars.

chrome/browser/ui/views/infobars/infobar_view.h

Index: chrome/browser/ui/views/infobars/infobar_view.h
diff --git a/chrome/browser/ui/views/infobars/infobar_view.h b/chrome/browser/ui/views/infobars/infobar_view.h
index 9486766001cd0c1bf628594375076c65f4513cd4..b1955f73df1b63ef4b500bb1c3eb713142f1965b 100644
--- a/chrome/browser/ui/views/infobars/infobar_view.h
+++ b/chrome/browser/ui/views/infobars/infobar_view.h
@@ -58,13 +58,8 @@ class InfoBarView : public infobars::InfoBar,
   // Creates a focusable button for use on an infobar. The appearance is
   // customized for infobars (except in Material mode).
   // NOTE: Subclasses must ignore button presses if we're unowned.
-  static views::Button* CreateTextButton(views::ButtonListener* listener,
-                                         const base::string16& text);
-
-  // Like CreateTextButton, but specifically creates a LabelButton.
-  // TODO(estade): remove this function when MD is default.
-  static views::LabelButton* CreateLabelButton(views::ButtonListener* listener,
-                                               const base::string16& text);
+  static views::LabelButton* CreateTextButton(views::ButtonListener* listener,
+                                              const base::string16& text);
 
   // Given |labels| and the total |available_width| to display them in, sets
   // each label's size so that the longest label shrinks until it reaches the