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

chrome/service/cloud_print/print_system_win.cc

Index: chrome/service/cloud_print/print_system_win.cc
diff --git a/chrome/service/cloud_print/print_system_win.cc b/chrome/service/cloud_print/print_system_win.cc
index ac090c2bf0ff6142eb3319906b43eb858a8f6ad2..550a56338d413eeea337d36bc99f12082470858d 100644
--- a/chrome/service/cloud_print/print_system_win.cc
+++ b/chrome/service/cloud_print/print_system_win.cc
@@ -545,7 +545,7 @@ class PrinterCapsHandler : public ServiceUtilityProcessHost::Client {
           PrinterSemanticCapsAndDefaultsToCdd(semantic_info));
       if (description) {
         base::JSONWriter::WriteWithOptions(
-            description.get(), base::JSONWriter::OPTIONS_PRETTY_PRINT,
+            *description, base::JSONWriter::OPTIONS_PRETTY_PRINT,
             &printer_info.printer_capabilities);
       }
     }