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

chrome/installer/util/uninstall_metrics.cc

Index: chrome/installer/util/uninstall_metrics.cc
diff --git a/chrome/installer/util/uninstall_metrics.cc b/chrome/installer/util/uninstall_metrics.cc
index 606b132d929fe9c586b29a8eb95fbf5f84d75326..3be41c4f1cc48592b3222f641e4fabfee36d2c97 100644
--- a/chrome/installer/util/uninstall_metrics.cc
+++ b/chrome/installer/util/uninstall_metrics.cc
@@ -4,12 +4,12 @@
 
 #include "chrome/installer/util/uninstall_metrics.h"
 
+#include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/installer/util/util_constants.h"
@@ -78,7 +78,7 @@ bool ExtractUninstallMetricsFromFile(const base::FilePath& file_path,
   JSONFileValueDeserializer json_deserializer(file_path);
 
   std::string json_error_string;
-  scoped_ptr<base::Value> root = json_deserializer.Deserialize(NULL, NULL);
+  std::unique_ptr<base::Value> root = json_deserializer.Deserialize(NULL, NULL);
   if (!root.get())
     return false;