Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

chrome/browser/extensions/activity_log/activity_log_unittest.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 "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
@@ skipping 219 matching lines @@
 }
 
 TEST_F(RenderViewActivityLogTest, LogPrerender) {
   scoped_refptr<const Extension> extension =
       ExtensionBuilder()
           .SetManifest(DictionaryBuilder()
                        .Set("name", "Test extension")
                        .Set("version", "1.0.0")
                        .Set("manifest_version", 2))
           .Build();
-  extension_service_->AddExtension(extension);
+  extension_service_->AddExtension(extension.get());
   ActivityLog* activity_log = ActivityLog::GetInstance(profile());
   ASSERT_TRUE(activity_log->IsLogEnabled());
   GURL url("http://www.google.com");
 
   prerender::PrerenderManager* prerender_manager =
       prerender::PrerenderManagerFactory::GetForProfile(
           Profile::FromBrowserContext(profile()));
 
   const gfx::Size kSize(640, 480);
   scoped_ptr<prerender::PrerenderHandle> prerender_handle(
@@ skipping 16 matching lines @@
 
   activity_log->GetActions(
       extension->id(), 0, base::Bind(
           RenderViewActivityLogTest::Arguments_Prerender));
 
   prerender_manager->CancelAllPrerenders();
 }
 
 }  // namespace extensions