Creating multi profile animations for switching users and teleporting of windows.

chrome/browser/chromeos/login/wallpaper_manager.cc

Index: chrome/browser/chromeos/login/wallpaper_manager.cc
diff --git a/chrome/browser/chromeos/login/wallpaper_manager.cc b/chrome/browser/chromeos/login/wallpaper_manager.cc
index 1758d2916bc74fd596ebadf63a846f25da8c9d4e..c064a508a247c596dc24b25f480bb515807ccaf5 100644
--- a/chrome/browser/chromeos/login/wallpaper_manager.cc
+++ b/chrome/browser/chromeos/login/wallpaper_manager.cc
@@ -702,6 +702,9 @@ void WallpaperManager::SetUserWallpaperNow(const std::string& email) {
 void WallpaperManager::ScheduleSetUserWallpaper(const std::string& email,
                                                 bool delayed) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  // Some unit tests come here without a UserManager.
+  if (!UserManager::IsInitialized())
+    return;
   // There is no visible background in  kiosk mode.
   if (UserManager::Get()->IsLoggedInAsKioskApp())
     return;
@@ -1193,10 +1196,12 @@ void WallpaperManager::OnWallpaperDecoded(
     return;
   }
 
-  // Only cache user wallpaper at login screen.
-  if (!UserManager::Get()->IsUserLoggedIn()) {
+  // Only cache the user wallpaper at login screen and for multi profile users.
+  if (!UserManager::Get()->IsUserLoggedIn() ||
+      (UserManager::Get()->GetLoggedInUsers().size() > 1)) {
     wallpaper_cache_.insert(std::make_pair(email, wallpaper.image()));

[bshe, 2014/01/27 16:00:15]

If a user changes wallpaper during multi profile session, we probably want to
update the cache as well. Cache is a std::map, so "insert" probably cant be used
to update the cache. Maybe switch to
"wallpaper_cache_[email] = wallpaper.image();" or something?

[Mr4D (OOO till 08-26), 2014/01/27 18:44:18]

Done.

   }
+
   if (update_wallpaper) {
     ash::Shell::GetInstance()->desktop_background_controller()->
         SetCustomWallpaper(wallpaper.image(), layout);