Add RetainedRef uses where needed.

chrome/browser/extensions/extension_service.cc

 // Copyright (c) 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/extensions/extension_service.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 1840 matching lines @@
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   extension_prefs_->OnExtensionInstalled(
       extension, initial_state, page_ordinal, install_flags, install_parameter);
   delayed_installs_.Remove(extension->id());
   if (InstallVerifier::NeedsVerification(*extension))
     InstallVerifier::Get(GetBrowserContext())->VerifyExtension(extension->id());
 
   const Extension* old = GetInstalledExtension(extension->id());
   if (extensions::AppDataMigrator::NeedsMigration(old, extension)) {
     app_data_migrator_->DoMigrationAndReply(
-        old, extension,
-        base::Bind(&ExtensionService::FinishInstallation, AsWeakPtr(),
-                   make_scoped_refptr(extension)));
+        old, extension, base::Bind(&ExtensionService::FinishInstallation,
+                                   AsWeakPtr(), base::RetainedRef(extension)));
     return;
   }
 
   FinishInstallation(extension);
 }
 
 void ExtensionService::MaybeFinishDelayedInstallation(
     const std::string& extension_id) {
   // Check if the extension already got installed.
   if (!delayed_installs_.Contains(extension_id))
@@ skipping 578 matching lines @@
 }
 
 void ExtensionService::OnProfileDestructionStarted() {
   ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
   for (ExtensionIdSet::iterator it = ids_to_unload.begin();
        it != ids_to_unload.end();
        ++it) {
     UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
   }
 }