Update a few STYLE_BUTTON buttons in mash.

mash/login/login.cc

Index: mash/login/login.cc
diff --git a/mash/login/login.cc b/mash/login/login.cc
index c9297fcc1edbad92482086fccd7ecda01263c201..4a5cb3f23338f1066652dd4c1594de50c16288e7 100644
--- a/mash/login/login.cc
+++ b/mash/login/login.cc
@@ -21,7 +21,7 @@
 #include "services/ui/public/cpp/property_type_converters.h"
 #include "services/ui/public/interfaces/user_access_manager.mojom.h"
 #include "ui/views/background.h"
-#include "ui/views/controls/button/label_button.h"
+#include "ui/views/controls/button/md_text_button.h"
 #include "ui/views/mus/aura_init.h"
 #include "ui/views/mus/native_widget_mus.h"
 #include "ui/views/mus/window_manager_connection.h"
@@ -66,12 +66,10 @@ class UI : public views::WidgetDelegateView,
         user_id_1_("00000000-0000-4000-8000-000000000000"),
         user_id_2_("00000000-0000-4000-8000-000000000001"),
         login_button_1_(
-            new views::LabelButton(this, base::ASCIIToUTF16("Timothy"))),
+            views::MdTextButton::Create(this, base::ASCIIToUTF16("Timothy"))),
         login_button_2_(
-            new views::LabelButton(this, base::ASCIIToUTF16("Jimothy"))) {
+            views::MdTextButton::Create(this, base::ASCIIToUTF16("Jimothy"))) {
     set_background(views::Background::CreateSolidBackground(SK_ColorRED));
-    login_button_1_->SetStyle(views::Button::STYLE_BUTTON);
-    login_button_2_->SetStyle(views::Button::STYLE_BUTTON);
     AddChildView(login_button_1_);
     AddChildView(login_button_2_);
   }
@@ -104,9 +102,9 @@ class UI : public views::WidgetDelegateView,
     button_box.set_y((button_box.height() - ps1.height()) / 2);
 
     login_button_1_->SetBounds(button_box.x(), button_box.y(), ps1.width(),
-                                ps1.height());
+                               ps1.height());
     login_button_2_->SetBounds(login_button_1_->bounds().right() + 10,
-                                button_box.y(), ps2.width(), ps2.height());
+                               button_box.y(), ps2.width(), ps2.height());
   }
 
   // Overridden from views::ButtonListener:
@@ -124,8 +122,8 @@ class UI : public views::WidgetDelegateView,
   shell::Connector* connector_;
   const std::string user_id_1_;
   const std::string user_id_2_;
-  views::LabelButton* login_button_1_;
-  views::LabelButton* login_button_2_;
+  views::MdTextButton* login_button_1_;
+  views::MdTextButton* login_button_2_;
   std::unique_ptr<shell::Connection> mash_wm_connection_;
   std::unique_ptr<views::WindowManagerConnection> window_manager_connection_;