MacViews: Style BUTTON_STYLE buttons using the "modern" UI

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 "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
@@ skipping 128 matching lines @@
 
   // NativeThemeDelegate:
   gfx::Rect GetThemePaintRect() const override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Init);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Label);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, Image);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, LabelAndImage);
   FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, FontList);
-  FRIEND_TEST_ALL_PREFIXES(LabelButtonTest, ButtonStyleIsDefaultSize);
 
   void SetTextInternal(const base::string16& text);
 
   // View:
   void ChildPreferredSizeChanged(View* child) override;
 
   // NativeThemeDelegate:
   ui::NativeTheme::Part GetThemePart() const override;
   ui::NativeTheme::State GetThemeState(
       ui::NativeTheme::ExtraParams* params) const override;
   const gfx::Animation* GetThemeAnimation() const override;
   ui::NativeTheme::State GetBackgroundThemeState(
       ui::NativeTheme::ExtraParams* params) const override;
   ui::NativeTheme::State GetForegroundThemeState(
       ui::NativeTheme::ExtraParams* params) const override;
 
   // Resets |cached_preferred_size_| and marks |cached_preferred_size_valid_|
   // as false.
   void ResetCachedPreferredSize();
 
+  // Updates additional state related to focus or default status.
+  void HighlightStateChanged();

[Elly Fong-Jones, 2016/04/05 16:43:25]

This function's comment is a little bit vague. It should probably describe what
the state being updated is, at least.

[tapted, 2016/04/06 12:08:33]

Done.

+
   // The image and label shown in the button.
   ImageView* image_;
   Label* label_;
 
   // A separate view is necessary to hold the ink drop layer so that it can
   // be stacked below |image_| and on top of |label_|, without resorting to
   // drawing |label_| on a layer (which can mess with subpixel anti-aliasing).
   View* ink_drop_container_;
 
   // The cached font lists in the normal and bold style.
@@ skipping 37 matching lines @@
   gfx::HorizontalAlignment horizontal_alignment_;
 
   scoped_ptr<Painter> focus_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(LabelButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_LABEL_BUTTON_H_