Properly destroy tabs via AppleScript.

chrome/browser/ui/cocoa/applescript/window_applescript.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/applescript/window_applescript.h"
 
 #include "base/logging.h"
 #import "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
@@ skipping 183 matching lines @@
   params.disposition = NEW_FOREGROUND_TAB;
   params.tabstrip_index = index;
   browser::Navigate(&params);
   params.target_contents->tab_contents()->set_new_tab_start_time(
       newTabStartTime);
 
   [aTab setTabContent:params.target_contents];
 }
 
 - (void)removeFromTabsAtIndex:(int)index {
-  browser_->tabstrip_model()->DetachTabContentsAt(index);
+  browser_->CloseTabContents(browser_->GetTabContentsAt(index));
 }
 
-- (NSNumber*)orderedIndex{
+- (NSNumber*)orderedIndex {
   return [NSNumber numberWithInt:[[self nativeHandle] orderedIndex]];
 }
 
 - (void)setOrderedIndex:(NSNumber*)anIndex {
   int index = [anIndex intValue] - 1;
   if (index < 0 || index >= (int)BrowserList::size()) {
     AppleScript::SetError(AppleScript::errWrongIndex);
     return;
   }
   [[self nativeHandle] setOrderedIndex:index];
@@ skipping 39 matching lines @@
         GURL(), FEB_TYPE_FULLSCREEN_EXIT_INSTRUCTION);
   }
 }
 
 - (void)handlesExitPresentationMode:(NSScriptCommand*)command {
   if (browser_->window())
     browser_->window()->ExitPresentationMode();
 }
 
 @end