Simplify ScopedVector<scoped_ptr<T>> to ScopedVector<T>.

tools/gn/functions.cc

Index: tools/gn/functions.cc
diff --git a/tools/gn/functions.cc b/tools/gn/functions.cc
index c68eda53adcae947ee252754d8c5c4a2b416e917..0d60d688adc47980b20123e58cc6d8d85656e20d 100644
--- a/tools/gn/functions.cc
+++ b/tools/gn/functions.cc
@@ -251,7 +251,7 @@ Value RunConfig(const FunctionCallNode* function,
     *err = Err(function, "Can't define a config in this context.");
     return Value();
   }
-  collector->push_back(new scoped_ptr<Item>(config.PassAs<Item>()));
+  collector->push_back(config.release());
 
   return Value();
 }