Convert JsonWriter::Write to taking a const ref for the in-param

components/dom_distiller/core/distiller_page.cc

Index: components/dom_distiller/core/distiller_page.cc
diff --git a/components/dom_distiller/core/distiller_page.cc b/components/dom_distiller/core/distiller_page.cc
index b8bcd28ff8ea524faed199e3a185be1c86dfd71c..0ed59b7adb12ee53c03b87377bc86d34c2e75e7e 100644
--- a/components/dom_distiller/core/distiller_page.cc
+++ b/components/dom_distiller/core/distiller_page.cc
@@ -40,7 +40,7 @@ std::string GetDistillerScriptWithOptions(
   scoped_ptr<base::Value> options_value(
       dom_distiller::proto::json::DomDistillerOptions::WriteToValue(options));
   std::string options_json;
-  if (!base::JSONWriter::Write(options_value.get(), &options_json)) {
+  if (!base::JSONWriter::Write(*options_value, &options_json)) {
     NOTREACHED();
   }
   size_t options_offset = script.find(kOptionsPlaceholder);