Delay wallpaper load by 2 * average wallpaper load time.

chrome/browser/resources/chromeos/login/screen_account_picker.js

Index: chrome/browser/resources/chromeos/login/screen_account_picker.js
diff --git a/chrome/browser/resources/chromeos/login/screen_account_picker.js b/chrome/browser/resources/chromeos/login/screen_account_picker.js
index ab2d4ec5d0ba8ed2429f77324df27e9e71aad577..377ecf2614680a74070c9af46a2027bd11224323 100644
--- a/chrome/browser/resources/chromeos/login/screen_account_picker.js
+++ b/chrome/browser/resources/chromeos/login/screen_account_picker.js
@@ -26,7 +26,8 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
       'updateUserImage',
       'updateUserGaiaNeeded',
       'setCapsLockState',
-      'forceLockedUserPodFocus'
+      'forceLockedUserPodFocus',
+      'wallpaperLoaded'

[dzhioev (left Google), 2013/09/26 17:46:41]

I think, this method should be renamed to "onWallpaperLoaded".

[Alexander Alekseev, 2013/10/01 15:47:49]

Done.

     ],
 
     /** @override */
@@ -179,6 +180,13 @@ login.createScreen('AccountPickerScreen', 'account-picker', function() {
       var row = $('pod-row');
       if (row.lockedPod)
         row.focusPod(row.lockedPod, true);
+    },
+
+    /**
+     * Mark wallpaper loaded
+     */
+    wallpaperLoaded: function(email) {
+      $('pod-row').wallpaperLoaded(email);
     }
   };
 });