Infobar system refactor.

chrome/browser/translate/options_menu_model.cc

 // 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 "chrome/browser/translate/options_menu_model.h"
 
 #include "base/metrics/histogram.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::NavigationEntry;
 using content::OpenURLParams;
 using content::Referrer;
 using content::WebContents;
 
 OptionsMenuModel::OptionsMenuModel(
     TranslateInfoBarDelegate* translate_delegate)
     : ui::SimpleMenuModel(this),
       translate_infobar_delegate_(translate_delegate) {
+  // |translate_delegate| must already be owned.
+  DCHECK(translate_infobar_delegate_->web_contents());
+
   string16 original_language = translate_delegate->language_name_at(
       translate_delegate->original_language_index());
   string16 target_language = translate_delegate->language_name_at(
       translate_delegate->target_language_index());
 
   bool autodetermined_source_language =
       translate_delegate->original_language_index() ==
       TranslateInfoBarDelegate::kNoIndex;
 
   // Populate the menu.
@@ skipping 92 matching lines @@
         web_contents->OpenURL(params);
       }
       break;
     }
 
     default:
       NOTREACHED() << "Invalid command id from menu.";
       break;
   }
 }