Convert //chrome from scoped_ptr to std::unique_ptr

chrome/browser/process_singleton_browsertest.cc

Index: chrome/browser/process_singleton_browsertest.cc
diff --git a/chrome/browser/process_singleton_browsertest.cc b/chrome/browser/process_singleton_browsertest.cc
index ff7a4cbff3557c5a229afc9d159cad105d77c3c9..02a30ce5f57865cabfa5f59a9a90eda7488bc6e4 100644
--- a/chrome/browser/process_singleton_browsertest.cc
+++ b/chrome/browser/process_singleton_browsertest.cc
@@ -12,6 +12,8 @@
 
 #include <stddef.h>
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ -19,7 +21,6 @@
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
 #include "base/process/process.h"