Newly created profiles should have the grey silhouette as avatar.

chrome/browser/ui/webui/signin/user_manager_screen_handler.cc

Index: chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
diff --git a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
index 006f7e0392d64c8d12be7d86ee8217a17fbc25a5..492559c92e93435ad3e2dc64ebe13cac974ebb3c 100644
--- a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
+++ b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
@@ -107,7 +107,7 @@ std::string GetAvatarImageAtIndex(
   if (avatar_image.Width() <= profiles::kAvatarIconWidth ||
       avatar_image.Height() <= profiles::kAvatarIconHeight ) {
     avatar_image = ui::ResourceBundle::GetSharedInstance().GetImageNamed(
-        IDR_USER_MANAGER_DEFAULT_AVATAR);
+        profiles::GetPlaceholderAvatarIconResourceID());
   }
   gfx::Image resized_image = profiles::GetSizedAvatarIcon(
       avatar_image, is_gaia_picture, kAvatarIconSize, kAvatarIconSize);