Make windows caption buttons look natural on windows 10

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h

 // Copyright 2013 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 CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
 
 #include "base/macros.h"
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view.h"
 #include "ui/views/layout/layout_manager.h"
 #include "ui/views/window/frame_buttons.h"
 
 class AvatarMenuButton;
 class NewAvatarButton;
 class OpaqueBrowserFrameViewLayoutDelegate;
 
 namespace views {
-class ImageButton;
+class CustomButton;
 class Label;
 }
 
 // Calculates the position of the widgets in the opaque browser frame view.
 //
 // This is separated out for testing reasons. OpaqueBrowserFrameView has tight
 // dependencies with Browser and classes that depend on Browser.
 class OpaqueBrowserFrameViewLayout : public views::LayoutManager {
  public:
   // Constants used by OpaqueBrowserFrameView as well.
@@ skipping 108 matching lines @@
   void ConfigureButton(views::View* host,
                        views::FrameButton button_id,
                        ButtonAlignment align,
                        int caption_y);
 
   // Sets the visibility of all buttons associated with |button_id| to false.
   void HideButton(views::FrameButton button_id);
 
   // Adds a window caption button to either the leading or trailing side.
   void SetBoundsForButton(views::View* host,
-                          views::ImageButton* button,
+                          views::CustomButton* button,
                           ButtonAlignment align,
                           int caption_y);
 
   // Internal implementation of ViewAdded() and ViewRemoved().
   void SetView(int id, views::View* view);
 
   // Overriden from views::LayoutManager:
   void Layout(views::View* host) override;
   gfx::Size GetPreferredSize(const views::View* host) const override;
   void ViewAdded(views::View* host, views::View* view) override;
@@ skipping 22 matching lines @@
   bool has_trailing_buttons_;
 
   // Extra offset from the top of the frame to the top of the window control
   // buttons. Configurable based on platform and whether we are under test.
   int extra_caption_y_;
 
   // Extra offset between the individual window caption buttons.
   int window_caption_spacing_;
 
   // Window controls.
-  views::ImageButton* minimize_button_;
-  views::ImageButton* maximize_button_;
-  views::ImageButton* restore_button_;
-  views::ImageButton* close_button_;
+  views::CustomButton* minimize_button_;
+  views::CustomButton* maximize_button_;
+  views::CustomButton* restore_button_;
+  views::CustomButton* close_button_;
 
   views::View* window_icon_;
   views::Label* window_title_;
 
   AvatarMenuButton* avatar_button_;
   views::View* new_avatar_button_;
 
   std::vector<views::FrameButton> leading_buttons_;
   std::vector<views::FrameButton> trailing_buttons_;
 
   DISALLOW_COPY_AND_ASSIGN(OpaqueBrowserFrameViewLayout);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_