mac: Use instantiateWithOwner: instead of deprecated instantiateNibWithOwner:

content/shell/browser/shell_browser_main_parts_mac.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 "content/shell/browser/shell_browser_main_parts.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/scoped_nsobject.h"
+#include "base/mac/sdk_forward_declarations.h"
 #include "content/shell/browser/shell_application_mac.h"
 
 namespace content {
 
 void ShellBrowserMainParts::PreMainMessageLoopStart() {
   // Force the NSApplication subclass to be used.
   [ShellCrApplication sharedApplication];
 
   base::scoped_nsobject<NSNib> nib(
       [[NSNib alloc] initWithNibNamed:@"MainMenu"
                                bundle:base::mac::FrameworkBundle()]);
-  [nib instantiateNibWithOwner:NSApp topLevelObjects:nil];
+  NSArray* top_level_objects = nil;
+  [nib instantiateWithOwner:NSApp topLevelObjects:nil];
+  for (NSObject* object : top_level_objects)
+    [object retain];

[Avi (use Gerrit), 2016/07/01 22:23:54]

Is

[top_level_objects makeObjectsPerformSelector:@selector(retain)];

too baroque? :)

 }
 
 }  // namespace content