Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/chromeos/drive/drive_integration_service_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 "chrome/browser/chromeos/drive/drive_integration_service.h"
 
 #include "base/message_loop.h"
 #include "chrome/browser/chromeos/drive/dummy_file_system.h"
 #include "chrome/browser/chromeos/drive/test_util.h"
 #include "chrome/browser/google_apis/dummy_drive_service.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace drive {
 
 class DriveIntegrationServiceTest : public testing::Test {
  public:
-  DriveIntegrationServiceTest() :
-      ui_thread_(content::BrowserThread::UI, &message_loop_),
-      integration_service_(NULL) {}
+  DriveIntegrationServiceTest()
+      : ui_thread_(content::BrowserThread::UI, &message_loop_) {}
 
   virtual void SetUp() OVERRIDE {
     profile_.reset(new TestingProfile);
     integration_service_.reset(new DriveIntegrationService(
         profile_.get(),
         new google_apis::DummyDriveService,
         base::FilePath(),
         new DummyFileSystem));
   }
 
@@ skipping 10 matching lines @@
   scoped_ptr<DriveIntegrationService> integration_service_;
 };
 
 TEST_F(DriveIntegrationServiceTest, InitializeAndShutdown) {
   integration_service_->Initialize();
   google_apis::test_util::RunBlockingPoolTask();
   integration_service_->Shutdown();
 }
 
 }  // namespace drive