Convert //chrome/installer from scoped_ptr to std::unique_ptr

chrome/installer/util/install_util.cc

Index: chrome/installer/util/install_util.cc
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
index b07d1a479a10da980d29a86764bac93790f67a10..c3e32d92e7d68aaae4169455b9aadc1830f674d0 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -12,13 +12,13 @@
 #include <shlwapi.h>
 
 #include <algorithm>
+#include <memory>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
@@ -361,7 +361,7 @@ void InstallUtil::UpdateInstallerStage(bool system_install,
 }
 
 bool InstallUtil::IsPerUserInstall(const base::FilePath& exe_path) {
-  scoped_ptr<base::Environment> env(base::Environment::Create());
+  std::unique_ptr<base::Environment> env(base::Environment::Create());
 
   static const char kEnvProgramFilesPath[] = "CHROME_PROBED_PROGRAM_FILES_PATH";
   std::string env_program_files_path;