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

chrome/browser/component_updater/test/component_updater_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/component_updater/component_updater_service.h"
 
 #include <list>
 #include <utility>
 
 #include "base/compiler_specific.h"
@@ skipping 167 matching lines @@
 }  // namespace
 
 // Common fixture for all the component updater tests.
 class ComponentUpdaterTest : public testing::Test {
  public:
   enum TestComponents {
     kTestComponent_abag,
     kTestComponent_jebg
   };
 
-  ComponentUpdaterTest() : component_updater_(NULL), test_config_(NULL) {
+  ComponentUpdaterTest() : test_config_(NULL) {
     // The component updater instance under test.
     test_config_ = new TestConfigurator;
     component_updater_.reset(ComponentUpdateServiceFactory(test_config_));
     test_config_->SetComponentUpdateService(component_updater_.get());
     // The test directory is chrome/test/data/components.
     PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir_);
     test_data_dir_ = test_data_dir_.AppendASCII("components");
 
     // Subscribe to all component updater notifications.
     const int notifications[] = {
@@ skipping 556 matching lines @@
 
   // The test harness's Register() function creates a new installer,
   // so the counts go back to 0.
   EXPECT_EQ(0, static_cast<TestInstaller*>(com1.installer)->error());
   EXPECT_EQ(0, static_cast<TestInstaller*>(com1.installer)->install_count());
   EXPECT_EQ(0, static_cast<TestInstaller*>(com2.installer)->error());
   EXPECT_EQ(0, static_cast<TestInstaller*>(com2.installer)->install_count());
 
   component_updater()->Stop();
 }