Add Applescript commands to enter presentation mode

chrome/browser/ui/cocoa/applescript/examples/window_operations.applescript

--- Copyright (c) 2010 The Chromium Authors. All rights reserved.
+-- Copyright (c) 2011 The Chromium Authors. All rights reserved.
 -- Use of this source code is governed by a BSD-style license that can be
 -- found in the LICENSE file.
 
 -- Contains usage of common window operations.
 tell application "Chromium"
   get URL of active tab of window 1  -- The URL currently being seen.
   
   set minimized of window 1 to true  -- Minimizes a window.
   set minimized of window 1 to false  -- Maximizes a window.
   
   get mode of window 1
   -- Checks if a window is in |normal mode| or |incognito mode|
   
   set visible of window 1 to true  -- Hides a window.
   set visible of window 1 to false  -- UnHides a window.
   
   -- Open multiple tabs.
   set active tab index of window 1 to 2  -- Selects the second tab.
   
+  -- Enter/exit presentation mode
+  if window 1 is not presenting
+    tell window 1 to enter presentation mode
+  end if
+  if window 1 is presenting
+    tell window 1 to exit presentation mode
+  end if
   
 end tell