Convert //gin to use std::unique_ptr

gin/modules/module_registry_unittest.cc

Index: gin/modules/module_registry_unittest.cc
diff --git a/gin/modules/module_registry_unittest.cc b/gin/modules/module_registry_unittest.cc
index e337c2d9b4bc5fd3fb01628a8384176d31db5c80..3921539016d2013ff067262a589d8b42bbe5e9f7 100644
--- a/gin/modules/module_registry_unittest.cc
+++ b/gin/modules/module_registry_unittest.cc
@@ -6,6 +6,8 @@
 
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/bind.h"
 #include "base/macros.h"
 #include "gin/modules/module_registry_observer.h"
@@ -28,7 +30,7 @@ struct TestHelper {
   }
 
   ModuleRunnerDelegate delegate;
-  scoped_ptr<ShellRunner> runner;
+  std::unique_ptr<ShellRunner> runner;
   Runner::Scope scope;
 };