Animated Gif Bfcache Crash

This page tests the fix for
rdar://problem/6978362 Repro crash animating GIF if previously used in a closed window's back/forward list
Bug 26568

Prerequisites:

• run the LayoutTest's webserver (WebKitTools/run-webkit-httpd)

Then click this button:

Expected results:

• A window will open, loading a page with an animated gif.
• about:blank will be loaded in that window, putting the animated gif in the back/forward cache.
• That window will close.
• A new window will open, loading that page with the animated gif
• No crash means test passed