Make NetLog take in callbacks that return Values

net/url_request/url_request_netlog_params.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_NETLOG_PARAMS_H_
 #define NET_URL_REQUEST_URL_REQUEST_NETLOG_PARAMS_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/base/request_priority.h"
 
 namespace net {
 
 // Holds the parameters to emit to the NetLog when starting a URLRequest.
 class NET_EXPORT URLRequestStartEventParameters
     : public NetLog::EventParameters {
  public:
   URLRequestStartEventParameters(const GURL& url,
                                  const std::string& method,
                                  int load_flags,
                                  RequestPriority priority);
 
-  const GURL& url() const {
-    return url_;
-  }
-
-  int load_flags() const {
-    return load_flags_;
-  }
-
   virtual base::Value* ToValue() const OVERRIDE;
 
  protected:
   virtual ~URLRequestStartEventParameters();
 
  private:
   const GURL url_;
   const std::string method_;
   const int load_flags_;
   const RequestPriority priority_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestStartEventParameters);
 };
 
+bool NET_EXPORT StartEventLoadFlagsFromEventParameters(
+    base::Value* event_params,
+    int* load_flags);
+
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_NETLOG_PARAMS_H_