Introduce a type of View background that stays in sync with its host

chrome/browser/ui/views/screen_capture_notification_ui_views.cc

 // 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.
 
 #include "chrome/browser/ui/screen_capture_notification_ui.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/browser/ui/views/chrome_views_export.h"
 #include "chrome/grit/generated_resources.h"
@@ skipping 174 matching lines @@
   // being captured. Make sure it's always the case. Currently we always capture
   // the primary monitor.
   if (ash::Shell::HasInstance())
     params.context = ash::Shell::GetPrimaryRootWindow();
 #endif
 
   widget->set_frame_type(views::Widget::FRAME_TYPE_FORCE_CUSTOM);
   widget->Init(params);
   widget->SetAlwaysOnTop(true);
 
-  set_background(views::Background::CreateSolidBackground(GetNativeTheme()->
-      GetSystemColor(ui::NativeTheme::kColorId_DialogBackground)));
+  set_background(views::Background::CreateThemedSolidBackground(
+      this, ui::NativeTheme::kColorId_DialogBackground));
 
   display::Screen* screen = display::Screen::GetScreen();
   // TODO(sergeyu): Move the notification to the display being captured when
   // per-display screen capture is supported.
   gfx::Rect work_area = screen->GetPrimaryDisplay().work_area();
 
   // Place the bar in the center of the bottom of the display.
   gfx::Size size = widget->non_client_view()->GetPreferredSize();
   gfx::Rect bounds(
       work_area.x() + work_area.width() / 2 - size.width() / 2,
@@ skipping 117 matching lines @@
   }
 }
 
 }  // namespace
 
 std::unique_ptr<ScreenCaptureNotificationUI>
 ScreenCaptureNotificationUI::Create(const base::string16& text) {
   return std::unique_ptr<ScreenCaptureNotificationUI>(
       new ScreenCaptureNotificationUIViews(text));
 }