[Mac] Use -close instead of -performClose.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa.mm

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h"
 
 #include "apps/app_shim/extension_app_shim_handler_mac.h"
 #include "base/command_line.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_util.h"
@@ skipping 589 matching lines @@
 
 void NativeAppWindowCocoa::ShowInactive() {
   [window() orderFront:window_controller_];
 }
 
 void NativeAppWindowCocoa::Hide() {
   HideWithoutMarkingHidden();
 }
 
 void NativeAppWindowCocoa::Close() {
-  [window() performClose:nil];
+  [window() close];
 }
 
 void NativeAppWindowCocoa::Activate() {
   [BrowserWindowUtils activateWindowForController:window_controller_];
 }
 
 void NativeAppWindowCocoa::Deactivate() {
   // TODO(jcivelli): http://crbug.com/51364 Implement me.
   NOTIMPLEMENTED();
 }
@@ skipping 380 matching lines @@
 }
 
 void NativeAppWindowCocoa::UpdateRestoredBounds() {
   if (IsRestored(*this))
     restored_bounds_ = [window() frame];
 }
 
 void NativeAppWindowCocoa::HideWithoutMarkingHidden() {
   [window() orderOut:window_controller_];
 }