Make common utility to load views from nibs.

content/shell/shell_login_dialog_mac.mm

 // Copyright (c) 2012 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/shell_login_dialog.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #import "base/mac/cocoa_protocols.h"
 #import "base/memory/scoped_nsobject.h"
 #include "base/sys_string_conversions.h"
 #include "content/public/browser/browser_thread.h"
+#import "ui/base/cocoa/nib_loading.h"
 
 namespace {
 
 const int kUsernameFieldTag = 1;
 const int kPasswordFieldTag = 2;
 
 }  // namespace
 
 // Helper object that receives the notification that the dialog/sheet is
 // going away.
@@ skipping 16 matching lines @@
 
 @implementation ShellLoginDialogHelper
 
 - (NSAlert*)alert {
   alert_.reset([[NSAlert alloc] init]);
   [alert_ setAccessoryView:[self accessoryView]];
   return alert_;
 }
 
 - (NSView*)accessoryView {
-  scoped_nsobject<NSNib> nib(
-      [[NSNib alloc] initWithNibNamed:@"HttpAuth"
-                               bundle:base::mac::FrameworkBundle()]);
-  if (!nib)
+  NSView* accessory_view = ui::GetViewFromNib(@"HttpAuth");
+  if (!accessory_view)
     return nil;
 
-  NSArray* objects;
-  BOOL success = [nib instantiateNibWithOwner:nil
-                              topLevelObjects:&objects];
-  if (!success)
-    return nil;
-  [objects makeObjectsPerformSelector:@selector(release)];
-
-  for (NSView* view in objects) {
-    if (![view isKindOfClass:[NSView class]])
-      continue;
-
-    usernameField_ = [view viewWithTag:kUsernameFieldTag];
-    passwordField_ = [view viewWithTag:kPasswordFieldTag];
-    return view;
-  }
-
-  return nil;
+  usernameField_ = [accessory_view viewWithTag:kUsernameFieldTag];
+  passwordField_ = [accessory_view viewWithTag:kPasswordFieldTag];
+  return accessory_view;
 }
 
 - (void)focus {
   [[alert_ window] makeFirstResponder:usernameField_];
 }
 
 - (void)alertDidEnd:(NSAlert*)alert
          returnCode:(int)returnCode
         contextInfo:(void*)contextInfo {
   if (returnCode == NSRunStoppedResponse)
@@ skipping 45 matching lines @@
   [helper_ release];
   helper_ = nil;
 }
 
 void ShellLoginDialog::PlatformRequestCancelled() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   [helper_ cancel];
 }
 
 }  // namespace content