If customization includes default wallpaper, download and apply it.

chrome/browser/ui/ash/chrome_shell_delegate.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 "chrome/browser/ui/ash/chrome_shell_delegate.h"
 
 #include "apps/app_window.h"
 #include "apps/app_window_registry.h"
 #include "ash/content_support/gpu_support_impl.h"
 #include "ash/host/window_tree_host_factory.h"
@@ skipping 13 matching lines @@
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/common/chrome_switches.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/display/display_configuration_observer.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/chromeos/login/wallpaper_manager.h"
 #endif
 
 // static
 ChromeShellDelegate* ChromeShellDelegate::instance_ = NULL;
 
 ChromeShellDelegate::ChromeShellDelegate()
     : shelf_delegate_(NULL) {
   instance_ = this;
   PlatformInit();
 }
@@ skipping 102 matching lines @@
 }
 
 base::string16 ChromeShellDelegate::GetProductName() const {
   return l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 }
 
 keyboard::KeyboardControllerProxy*
     ChromeShellDelegate::CreateKeyboardControllerProxy() {
   return new AshKeyboardControllerProxy();
 }
+
+bool ChromeShellDelegate::ShouldUseCustomizedDefaultWallpaper() const {
+#if defined(OS_CHROMEOS)
+  return chromeos::WallpaperManager::ShouldUseCustomizedDefaultWallpaper();
+#else
+  return false;
+#endif
+}
+
+base::FilePath
+ChromeShellDelegate::GetCustomizedWallpaperDefaultRescaledSmallFileName()
+    const {
+#if defined(OS_CHROMEOS)
+  return chromeos::WallpaperManager::
+      GetCustomizedWallpaperDefaultRescaledSmallFileName();
+#else
+  return base::FilePath();
+#endif
+}
+
+base::FilePath
+ChromeShellDelegate::GetCustomizedWallpaperDefaultRescaledLargeFileName()
+    const {
+#if defined(OS_CHROMEOS)
+  return chromeos::WallpaperManager::
+      GetCustomizedWallpaperDefaultRescaledLargeFileName();
+#else
+  return base::FilePath();
+#endif
+}