Revert 95480 - Abstract fullscreen exit bubble logic to bring Linux's behaviour in line with

Revert 95480 - Abstract fullscreen exit bubble logic to bring Linux's behaviour in line with
Windows.

I committed with the wrong change description-- This has nothing to do will
fullscreen exit bubble, it has to do with data pak files).

Review URL: http://codereview.chromium.org/7549005

TBR=tony@chromium.org
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=95482