[MD] Use same focus ring on BarControlButton as MdTextButton.

ui/views/controls/button/image_button.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/controls/button/image_button.h"
 
 #include <utility>
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_view_state.h"
@@ skipping 118 matching lines @@
     canvas->DrawImageInt(img, position.x(), position.y());
   }
 
   Painter::PaintFocusPainter(this, canvas, focus_painter());
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ImageButton, protected:
 
 void ImageButton::OnFocus() {
-  View::OnFocus();
+  CustomButton::OnFocus();
   if (focus_painter_.get())
     SchedulePaint();
 }
 
 void ImageButton::OnBlur() {
-  View::OnBlur();
+  CustomButton::OnBlur();
   if (focus_painter_.get())
     SchedulePaint();
 }
 
 gfx::ImageSkia ImageButton::GetImageToPaint() {
   gfx::ImageSkia img;
 
   if (!images_[STATE_HOVERED].isNull() && hover_animation().is_animating()) {
     img = gfx::ImageSkiaOperations::CreateBlendedImage(
         images_[STATE_NORMAL], images_[STATE_HOVERED],
@@ skipping 110 matching lines @@
   *tooltip = toggled_tooltip_text_;
   return true;
 }
 
 void ToggleImageButton::GetAccessibleState(ui::AXViewState* state) {
   ImageButton::GetAccessibleState(state);
   GetTooltipText(gfx::Point(), &state->name);
 }
 
 }  // namespace views