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1/**
2 * Copyright 2014 The Chromium Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
5 */
6
7/**
8 * Preloads images. Without preloading, background image starts loading in
9 * the moment when CSS property is applied. Image loading has visible delay and
10 * looks like defect.
11 */
12
13@media all and (-webkit-max-device-pixel-ratio: 1.5) {
14  body::after {
15    content:
16        url('chrome://resources/images/apps/button.png')
17        url('chrome://resources/images/apps/button_hover.png')
18        url('chrome://resources/images/apps/button_pressed.png')
19        url('chrome://resources/images/apps/button_focused.png')
20        url('chrome://resources/images/apps/button_focused_hover.png')
21        url('chrome://resources/images/apps/button_focused_pressed.png')
22        url('chrome://resources/images/apps/button_inactive.png')
23        url('chrome://resources/images/apps/blue_button.png')
24        url('chrome://resources/images/apps/blue_button_hover.png')
25        url('chrome://resources/images/apps/blue_button_pressed.png')
26        url('chrome://resources/images/apps/blue_button_focused.png')
27        url('chrome://resources/images/apps/blue_button_focused_hover.png')
28        url('chrome://resources/images/apps/blue_button_focused_pressed.png')
29        url('chrome://resources/images/apps/blue_button_inactive.png');
30    display: none;
31  }
32}
33
34@media all and (-webkit-min-device-pixel-ratio: 1.5) {
35  body::after {
36    content:
37        url('chrome://resources/images/2x/apps/button.png')
38        url('chrome://resources/images/2x/apps/button_hover.png')
39        url('chrome://resources/images/2x/apps/button_pressed.png')
40        url('chrome://resources/images/2x/apps/button_focused.png')
41        url('chrome://resources/images/2x/apps/button_focused_hover.png')
42        url('chrome://resources/images/2x/apps/button_focused_pressed.png')
43        url('chrome://resources/images/2x/apps/button_inactive.png')
44        url('chrome://resources/images/2x/apps/blue_button.png')
45        url('chrome://resources/images/2x/apps/blue_button_hover.png')
46        url('chrome://resources/images/2x/apps/blue_button_pressed.png')
47        url('chrome://resources/images/2x/apps/blue_button_focused.png')
48        url('chrome://resources/images/2x/apps/blue_button_focused_hover.png')
49        url('chrome://resources/images/2x/apps/blue_button_focused_pressed.png')
50        url('chrome://resources/images/2x/apps/blue_button_inactive.png');
51    display: none;
52  }
53}
54