[MD] Eliminate as many SetStyle(STYLE_BUTTON) calls as possible.

ui/views/window/dialog_client_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/window/dialog_client_view.h"
 
 #include <algorithm>
 
 #include "build/build_config.h"
 #include "ui/base/material_design/material_design_controller.h"
@@ skipping 288 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // DialogClientView, private:
 
 LabelButton* DialogClientView::CreateDialogButton(ui::DialogButton type) {
   const base::string16 title = GetDialogDelegate()->GetDialogButtonLabel(type);
   LabelButton* button = NULL;
   if (GetDialogDelegate()->UseNewStyleForThisDialog() &&
       GetDialogDelegate()->GetDefaultDialogButton() == type &&
       GetDialogDelegate()->ShouldDefaultButtonBeBlue()) {
-    if (ui::MaterialDesignController::IsSecondaryUiMaterial()) {
-      MdTextButton* md_button = MdTextButton::CreateMdButton(this, title);
-      md_button->SetCallToAction(MdTextButton::STRONG_CALL_TO_ACTION);
-      button = md_button;
-    } else {
-      button = new BlueButton(this, title);
-    }
+    return MdTextButton::CreateSecondaryUiBlueButton(this, title);
   } else {
     button = MdTextButton::CreateSecondaryUiButton(this, title);
   }
-  Button::ConfigureDefaultFocus(button);
 
   const int kDialogMinButtonWidth = 75;
   button->SetMinSize(gfx::Size(kDialogMinButtonWidth, 0));
   button->SetGroup(kButtonGroup);
   return button;
 }
 
 int DialogClientView::GetButtonsAndExtraViewRowHeight() const {
   int extra_view_height = ShouldShow(extra_view_) ?
       extra_view_->GetPreferredSize().height() : 0;
@@ skipping 26 matching lines @@
       std::remove(child_views.begin(), child_views.end(), nullptr),
       child_views.end());
 
   // Setup focus by reordering views. It is not safe to use SetNextFocusableView
   // since child views may be added externally to this view.
   for (size_t i = 0; i < child_views.size(); i++)
     ReorderChildView(child_views[i], i);
 }
 
 }  // namespace views