More base::Values-related bare pointer -> scoped_ptr conversions

base/values.cc

Index: base/values.cc
diff --git a/base/values.cc b/base/values.cc
index f448f51d2bd3821005d85e976418882c1230466c..7b63413bc583694203b3679bf163738143ca10dd 100644
--- a/base/values.cc
+++ b/base/values.cc
@@ -85,8 +85,8 @@ Value::~Value() {
 }
 
 // static
-Value* Value::CreateNullValue() {
-  return new Value(TYPE_NULL);
+scoped_ptr<Value> Value::CreateNullValue() {
+  return make_scoped_ptr(new Value(TYPE_NULL));
 }
 
 bool Value::GetAsBinary(const BinaryValue** out_value) const {
@@ -137,7 +137,7 @@ Value* Value::DeepCopy() const {
   // This method should only be getting called for null Values--all subclasses
   // need to provide their own implementation;.
   DCHECK(IsType(TYPE_NULL));
-  return CreateNullValue();
+  return CreateNullValue().release();
 }
 
 scoped_ptr<Value> Value::CreateDeepCopy() const {