Remove a bunch of pre-MD toolbar code and assets.

ui/views/controls/button/label_button.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 13 matching lines @@
 class LabelButtonBorder;
 class Painter;
 
 // LabelButton is a button with text and an icon, it's not focusable by default.
 class VIEWS_EXPORT LabelButton : public CustomButton,
                                  public NativeThemeDelegate {
  public:
   // The length of the hover fade animation.
   static const int kHoverAnimationDurationMs;
 
-  // Amount to inset each edge of the button when drawing the focus rectangle.
-  static const int kFocusRectInset;
-
   static const char kViewClassName[];
 
   LabelButton(ButtonListener* listener, const base::string16& text);
   ~LabelButton() override;
 
   // Gets or sets the image shown for the specified button state.
   // GetImage returns the image for STATE_NORMAL if the state's image is empty.
   virtual gfx::ImageSkia GetImage(ButtonState for_state) const;
   void SetImage(ButtonState for_state, const gfx::ImageSkia& image);
 
@@ skipping 187 matching lines @@
   gfx::HorizontalAlignment horizontal_alignment_;
 
   std::unique_ptr<Painter> focus_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(LabelButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_