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

chrome/browser/extensions/api/messaging/native_message_process_host_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/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/json/json_reader.h"
@@ skipping 64 matching lines @@
   base::PlatformFile read_file_;
   base::PlatformFile write_file_;
 };
 
 class NativeMessagingTest : public ::testing::Test,
                             public NativeMessageProcessHost::Client,
                             public base::SupportsWeakPtr<NativeMessagingTest> {
  protected:
   NativeMessagingTest()
       : current_channel_(chrome::VersionInfo::CHANNEL_DEV),
-        native_message_process_host_(NULL),
-        thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
-  }
+        thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {}
 
   virtual void SetUp() OVERRIDE {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     // Change the user data dir so native apps will be looked for in the test
     // directory.
     ASSERT_TRUE(PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_));
     ASSERT_TRUE(PathService::Override(chrome::DIR_USER_DATA, GetTestDir()));
   }
 
   virtual void TearDown() OVERRIDE {
@@ skipping 152 matching lines @@
   read_message_run_loop_->Run();
   EXPECT_TRUE(last_message_->GetInteger("id", &id));
   EXPECT_EQ(2, id);
   EXPECT_TRUE(last_message_->GetString("echo.foo", &text));
   EXPECT_EQ("bar", text);
   EXPECT_TRUE(last_message_->GetString("caller_url", &url));
   EXPECT_EQ(expected_url, url);
 }
 
 }  // namespace extensions