Remove icon bg color for message center notifications.

ui/message_center/views/notification_view.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/message_center/views/notification_view.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 562 matching lines @@
     const Notification& notification) {
   gfx::Size image_view_size(kNotificationIconSize, kNotificationIconSize);
 
   if (!icon_view_) {
     icon_view_ = new ProportionalImageView(image_view_size);
     AddChildView(icon_view_);
   }
 
   gfx::ImageSkia icon = notification.icon().AsImageSkia();
   icon_view_->SetImage(icon, icon.size());
-
-  if (notification.draw_icon_background()) {
-    icon_view_->set_background(
-        views::Background::CreateSolidBackground(kIconBackgroundColor));
-  } else {
-    icon_view_->set_background(nullptr);
-  }
 }
 
 void NotificationView::CreateOrUpdateImageView(
     const Notification& notification) {
   // |image_view_| is the view representing the area covered by the
   // notification's image, including background and border.  Its size can be
   // specified in advance and images will be scaled to fit including a border if
   // necessary.
   if (notification.image().IsEmpty()) {
     delete image_container_;
@@ skipping 111 matching lines @@
 
   return message_line_limit;
 }
 
 int NotificationView::GetMessageHeight(int width, int limit) const {
   return message_view_ ?
          message_view_->GetSizeForWidthAndLines(width, limit).height() : 0;
 }
 
 }  // namespace message_center