Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/convert_user_script.cc

Index: chrome/browser/extensions/convert_user_script.cc
diff --git a/chrome/browser/extensions/convert_user_script.cc b/chrome/browser/extensions/convert_user_script.cc
index bbd787b83b6569a1ff280a8b4a655094967dde1f..48e89406c63a7f8c14946f9489bf61478be4bd6f 100644
--- a/chrome/browser/extensions/convert_user_script.cc
+++ b/chrome/browser/extensions/convert_user_script.cc
@@ -66,7 +66,7 @@ scoped_refptr<Extension> ConvertUserScriptToExtension(
   }
 
   // Create the manifest
-  scoped_ptr<base::DictionaryValue> root(new base::DictionaryValue);
+  std::unique_ptr<base::DictionaryValue> root(new base::DictionaryValue);
   std::string script_name;
   if (!script.name().empty() && !script.name_space().empty())
     script_name = script.name_space() + "/" + script.name();