Use rvalue reference instead of ExtensionBuilder::pass()

chrome/browser/ui/webui/media_router/media_router_ui_unittest.cc

 // Copyright 2015 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 "base/bind.h"
 #include "chrome/browser/media/router/media_route.h"
 #include "chrome/browser/media/router/mock_media_router.h"
 #include "chrome/browser/ui/webui/media_router/media_router_ui.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
@@ skipping 97 matching lines @@
   EXPECT_CALL(mock_router, UnregisterMediaRoutesObserver(_)).Times(1);
   observer.reset();
 }
 
 TEST_F(MediaRouterUITest, GetExtensionNameExtensionPresent) {
   std::string id = "extensionid";
   GURL url = GURL("chrome-extension://" + id);
   scoped_ptr<extensions::ExtensionRegistry> registry =
       make_scoped_ptr(new extensions::ExtensionRegistry(nullptr));
   scoped_refptr<extensions::Extension> app =
-      extensions::test_util::BuildApp(extensions::ExtensionBuilder().Pass())
+      extensions::test_util::BuildApp(extensions::ExtensionBuilder())
           .MergeManifest(
               extensions::DictionaryBuilder().Set("name", "test app name"))
           .SetID(id)
           .Build();
 
   ASSERT_TRUE(registry->AddEnabled(app));
   EXPECT_EQ("test app name",
             MediaRouterUI::GetExtensionName(url, registry.get()));
 }
 
 TEST_F(MediaRouterUITest, GetExtensionNameEmptyWhenNotInstalled) {
   std::string id = "extensionid";
   GURL url = GURL("chrome-extension://" + id);
   scoped_ptr<extensions::ExtensionRegistry> registry =
       make_scoped_ptr(new extensions::ExtensionRegistry(nullptr));
 
   EXPECT_EQ("", MediaRouterUI::GetExtensionName(url, registry.get()));
 }
 
 TEST_F(MediaRouterUITest, GetExtensionNameEmptyWhenNotExtensionURL) {
   GURL url = GURL("https://www.google.com");
   scoped_ptr<extensions::ExtensionRegistry> registry =
       make_scoped_ptr(new extensions::ExtensionRegistry(nullptr));
 
   EXPECT_EQ("", MediaRouterUI::GetExtensionName(url, registry.get()));
 }
 }  // namespace media_router