If customization includes default wallpaper, download and apply it.

chrome/browser/chromeos/customization_document.h

Index: chrome/browser/chromeos/customization_document.h
diff --git a/chrome/browser/chromeos/customization_document.h b/chrome/browser/chromeos/customization_document.h
index a6241cc1a89761f36366ab700bdafd73dc652a22..4cf81241a7916f97ff94ed1a8101ee6c5fca013f 100644
--- a/chrome/browser/chromeos/customization_document.h
+++ b/chrome/browser/chromeos/customization_document.h
@@ -44,6 +44,7 @@ void Test__InitStartupCustomizationDocument(const std::string& manifest);
 namespace chromeos {
 
 class ServicesCustomizationExternalLoader;
+class CustomizationWallpaperDownloader;
 
 namespace system {
 class StatisticsProvider;
@@ -170,8 +171,14 @@ class ServicesCustomizationDocument : public CustomizationDocument,
   // Cache of OEM default apps stored in profile preferences.
   extensions::ExternalLoader* CreateExternalLoader(Profile* profile);
 
+  // This is also used by Wallpaper manager to set customized wallpaper path
+  // to global default before first wallpaper was shown.
+  static base::FilePath GetCustomizedWallpaperCacheDir();
+  static base::FilePath GetCustomizedWallpaperDownloadedFileName();
+
  private:
   friend struct DefaultSingletonTraits<ServicesCustomizationDocument>;
+  friend class CustomizationWallpaperDownloader;
 
   typedef std::vector<base::WeakPtr<ServicesCustomizationExternalLoader> >
       ExternalLoaders;
@@ -212,6 +219,24 @@ class ServicesCustomizationDocument : public CustomizationDocument,
   // Update cached manifest for |profile|.
   void UpdateCachedManifest(Profile* profile);
 
+  // Set Shell default wallpaper to customized.
+  static void SetDefaultWallpaperPath(const GURL& wallpaper_url);
+
+  // This is called by CustomizationWallpaperDownloader to destroy self.
+  static void DestroyWallpaperDownloader();
+
+  // Start download of wallpaper image if need.
+  void StartOEMWallpaperDownload(const GURL& wallpaper_url);
+
+  // Check downloaded wallpaper and start download if needed.
+  void CheckAndApplyWallpaper();
+
+  // Intermediate function to pass the result of PathExists to ApplyWallpaper.
+  void OnCheckedWallpaperCacheExists(scoped_ptr<bool>);
+
+  // Called after downloaded wallpaper has been checked.
+  void ApplyWallpaper(bool default_wallpaper_file_exists);
+
   // Services customization manifest URL.
   GURL url_;
 
@@ -230,6 +255,11 @@ class ServicesCustomizationDocument : public CustomizationDocument,
   // Known external loaders.
   ExternalLoaders external_loaders_;
 
+  scoped_ptr<CustomizationWallpaperDownloader> wallpaper_downloader_;
+
+  // Tests can destroy singletons.
+  base::WeakPtrFactory<ServicesCustomizationDocument> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ServicesCustomizationDocument);
 };