Move/replace/rename URL-based extension getters from ExtensionService to/in ExtensionSet.

chrome/browser/chromeos/login/help_app_launcher.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
 
 #include <string>
 
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
@@ skipping 28 matching lines @@
   ExtensionService* service = profile->GetExtensionService();
 
   DCHECK(service);
   if (!service)
     return;
 
   GURL url(base::StringPrintf(kHelpAppFormat,
                               static_cast<int>(help_topic_id)));
   // HelpApp component extension presents only in official builds so we can
   // show help only when the extensions is installed.
-  if (service->GetExtensionByURL(url))
+  if (service->extensions()->GetByID(url.host()))
     ShowHelpTopicDialog(GURL(url));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // HelpApp, private:
 
 void HelpAppLauncher::ShowHelpTopicDialog(const GURL& topic_url) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   dialog_.reset(new LoginHtmlDialog(
       this,
       parent_window_,
       UTF16ToWide(
           l10n_util::GetStringUTF16(IDS_LOGIN_OOBE_HELP_DIALOG_TITLE)),
       topic_url,
       LoginHtmlDialog::STYLE_BUBBLE));
   dialog_->Show();
 }
 
 }  // namespace chromeos