Use views::style for buttons, bootstrap ash_typography to do so.

ui/views/touchui/touch_selection_menu_runner_views.cc

 // Copyright 2015 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/touchui/touch_selection_menu_runner_views.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/aura/window.h"
 #include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/text_utils.h"
 #include "ui/strings/grit/ui_strings.h"
 #include "ui/views/bubble/bubble_dialog_delegate.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/layout/box_layout.h"
+#include "ui/views/style/typography.h"
 
 namespace views {
 namespace {
 
 const int kMenuCommands[] = {IDS_APP_CUT, IDS_APP_COPY, IDS_APP_PASTE};
 const int kSpacingBetweenButtons = 2;
 const int kButtonSeparatorColor = SkColorSetARGB(13, 0, 0, 0);
 const int kMenuButtonMinHeight = 38;
 const int kMenuButtonMinWidth = 63;
 const int kMenuMargin = 1;
@@ skipping 118 matching lines @@
   AddChildView(
       CreateButton(base::UTF8ToUTF16(kEllipsesButtonText), kEllipsesButtonTag));
   Layout();
 }
 
 Button* TouchSelectionMenuRunnerViews::Menu::CreateButton(
     const base::string16& title,
     int tag) {
   base::string16 label =
       gfx::RemoveAcceleratorChar(title, '&', nullptr, nullptr);
-  LabelButton* button = new LabelButton(this, label);
+  LabelButton* button = new LabelButton(this, label, style::CONTEXT_TOUCH_MENU);
   button->SetMinSize(gfx::Size(kMenuButtonMinWidth, kMenuButtonMinHeight));
   button->SetFocusForPlatform();
-  button->AdjustFontSize(ui::ResourceBundle::kSmallFontDelta);
   button->SetHorizontalAlignment(gfx::ALIGN_CENTER);
   button->set_tag(tag);
   return button;
 }
 
 void TouchSelectionMenuRunnerViews::Menu::CloseMenu() {
   DisconnectOwner();
   // Closing the widget will self-destroy this object.
   Widget* widget = GetWidget();
   if (widget && !widget->IsClosed())
@@ skipping 92 matching lines @@
   // Closing the menu sets |menu_| to nullptr and eventually deletes the object.
   menu_->CloseMenu();
   DCHECK(!menu_);
 }
 
 bool TouchSelectionMenuRunnerViews::IsRunning() const {
   return menu_ != nullptr;
 }
 
 }  // namespace views