Don't use a scoped_refptr for StringVar::FromPPVar

webkit/plugins/ppapi/ppb_uma_private_impl.cc

Index: webkit/plugins/ppapi/ppb_uma_private_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_uma_private_impl.cc b/webkit/plugins/ppapi/ppb_uma_private_impl.cc
index 10807cb38f072b6274e750c3e7144c7caa0180ee..ec85c16309c40c7e200378b19b1fe0733ccfa39a 100644
--- a/webkit/plugins/ppapi/ppb_uma_private_impl.cc
+++ b/webkit/plugins/ppapi/ppb_uma_private_impl.cc
@@ -33,7 +33,7 @@ void HistogramCustomTimes(PP_Var name,
                           uint32_t bucket_count) {
   RETURN_IF_BAD_ARGS(name, sample, min, max, bucket_count);
 
-  scoped_refptr<StringVar> name_string(StringVar::FromPPVar(name));
+  StringVar* name_string = StringVar::FromPPVar(name);
   if (name_string == NULL)
     return;
   base::Histogram* counter =
@@ -52,7 +52,7 @@ void HistogramCustomCounts(PP_Var name,
                            uint32_t bucket_count) {
   RETURN_IF_BAD_ARGS(name, sample, min, max, bucket_count);
 
-  scoped_refptr<StringVar> name_string(StringVar::FromPPVar(name));
+  StringVar* name_string = StringVar::FromPPVar(name);
   if (name_string == NULL)
     return;
   base::Histogram* counter =
@@ -70,7 +70,7 @@ void HistogramEnumeration(PP_Var name,
                           int32_t boundary_value) {
   RETURN_IF_BAD_ARGS(name, sample, 1, boundary_value, boundary_value + 1);
 
-  scoped_refptr<StringVar> name_string(StringVar::FromPPVar(name));
+  StringVar* name_string = StringVar::FromPPVar(name);
   if (name_string == NULL)
     return;
   base::Histogram* counter =