Convert chrome/common to std::unique_ptr

chrome/common/importer/importer_test_registry_overrider_win.cc

 // Copyright (c) 2013 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/common/importer/importer_test_registry_overrider_win.h"
 
 #include <windows.h>
 
+#include <memory>
 #include <string>
 
 #include "base/environment.h"
 #include "base/guid.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/registry.h"
 
 namespace {
 
 // The key to which a random subkey will be appended. This key itself will never
 // be deleted.
 const wchar_t kTestHKCUOverrideKeyPrefix[] = L"SOFTWARE\\Chromium Unit Tests\\";
 const char kTestHKCUOverrideEnvironmentVariable[] =
     "IE_IMPORTER_TEST_OVERRIDE_HKCU";
 
 // Reads the environment variable set by a previous call to
 // SetTestRegistryOverride() into |key| if it exists and |key| is not NULL.
 // Returns true if the variable was successfully read.
 bool GetTestKeyFromEnvironment(base::string16* key) {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
+  std::unique_ptr<base::Environment> env(base::Environment::Create());
   std::string value;
   bool result = env->GetVar(kTestHKCUOverrideEnvironmentVariable, &value);
   if (result)
     *key = base::UTF8ToUTF16(value);
   return result;
 }
 
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 // ImporterTestRegistryOverrider, public:
 
 ImporterTestRegistryOverrider::ImporterTestRegistryOverrider()
     : temporary_key_(kTestHKCUOverrideKeyPrefix +
                      base::UTF8ToUTF16(base::GenerateGUID())) {
   DCHECK(!GetTestKeyFromEnvironment(NULL));
 
-  scoped_ptr<base::Environment> env(base::Environment::Create());
+  std::unique_ptr<base::Environment> env(base::Environment::Create());
   bool success = env->SetVar(kTestHKCUOverrideEnvironmentVariable,
                              base::UTF16ToUTF8(temporary_key_));
   DCHECK(success);
 }
 
 ImporterTestRegistryOverrider::~ImporterTestRegistryOverrider() {
   base::win::RegKey reg_key(HKEY_CURRENT_USER, temporary_key_.c_str(),
                             KEY_ALL_ACCESS);
   DCHECK(reg_key.Valid());
   reg_key.DeleteKey(L"");
 
-  scoped_ptr<base::Environment> env(base::Environment::Create());
+  std::unique_ptr<base::Environment> env(base::Environment::Create());
   bool success = env->UnSetVar(kTestHKCUOverrideEnvironmentVariable);
   DCHECK(success);
 }
 
 // static
 base::string16 ImporterTestRegistryOverrider::GetTestRegistryOverride() {
   base::string16 key;
   if (!GetTestKeyFromEnvironment(&key))
     return base::string16();
   return key;
 }