Change NetLog::ParametersCallback to return a scoped_ptr.

net/http/http_request_headers.cc

Index: net/http/http_request_headers.cc
diff --git a/net/http/http_request_headers.cc b/net/http/http_request_headers.cc
index eaeec0deacbbcc79f2bc31f6b51e452cd25a6fcc..004d0659512c62ec3d35b40d1abd6926171cfe8b 100644
--- a/net/http/http_request_headers.cc
+++ b/net/http/http_request_headers.cc
@@ -188,10 +188,10 @@ std::string HttpRequestHeaders::ToString() const {
   return output;
 }
 
-base::Value* HttpRequestHeaders::NetLogCallback(
+scoped_ptr<base::Value> HttpRequestHeaders::NetLogCallback(
     const std::string* request_line,
     NetLogCaptureMode capture_mode) const {
-  base::DictionaryValue* dict = new base::DictionaryValue();
+  scoped_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
   dict->SetString("line", *request_line);
   base::ListValue* headers = new base::ListValue();
   for (HeaderVector::const_iterator it = headers_.begin();
@@ -203,7 +203,7 @@ base::Value* HttpRequestHeaders::NetLogCallback(
                            it->key.c_str(), log_value.c_str())));
   }
   dict->Set("headers", headers);
-  return dict;
+  return dict.Pass();
 }
 
 // static