Enable surprise me wallpaper for new profiles.

chrome/browser/chromeos/login/login_utils.cc

Index: chrome/browser/chromeos/login/login_utils.cc
diff --git a/chrome/browser/chromeos/login/login_utils.cc b/chrome/browser/chromeos/login/login_utils.cc
index 7800adaec4210045e9a9c5da0a63d19d3bee8aa6..f27ead92740d13ab7adb7504654ce9380ed09ec5 100644
--- a/chrome/browser/chromeos/login/login_utils.cc
+++ b/chrome/browser/chromeos/login/login_utils.cc
@@ -51,6 +51,7 @@
 #include "chrome/browser/chromeos/login/supervised_user_manager.h"
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/chromeos/login/wallpaper_manager.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/first_run/first_run.h"
@@ -348,6 +349,11 @@ void LoginUtilsImpl::DoBrowserLaunchOnLocaleLoadedImpl(
                                 first_run,
                                 &return_code);
 
+  if (UserManager::Get()->IsCurrentUserNew() &&
+     UserManager::Get()->IsLoggedInAsRegularUser()) {

[Nikita (slow), 2014/04/08 16:58:27]

nit: Can you please add a check that 
UserManager::GetLoggedInUsers().size() == 1

IsCurrentUserNew() may not be correctly working in multi-profiles, need to do a
cleanup.

[Harry McCleave, 2014/04/09 02:41:33]

Done.

+    WallpaperManager::Get()->EnableSurpriseMe();
+  }
+
   // Triggers app launcher start page service to load start page web contents.
   app_list::StartPageService::Get(profile);