If customization includes default wallpaper, download and apply it.

ash/test/test_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 "ash/test/test_shell_delegate.h"
 
 #include <limits>
 
 #include "ash/default_accessibility_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 137 matching lines @@
 }
 
 base::string16 TestShellDelegate::GetProductName() const {
   return base::string16();
 }
 
 TestSessionStateDelegate* TestShellDelegate::test_session_state_delegate() {
   return test_session_state_delegate_;
 }
 
+bool TestShellDelegate::ShouldUseCustomizedDefaultWallpaper() const {
+  return false;
+}
+
+base::FilePath
+TestShellDelegate::GetCustomizedWallpaperDefaultRescaledSmallFileName() const {
+  return base::FilePath();
+}
+
+base::FilePath
+TestShellDelegate::GetCustomizedWallpaperDefaultRescaledLargeFileName() const {
+  return base::FilePath();
+}
+
 }  // namespace test
 }  // namespace ash