Extracting NetLog inner classes into their own classes.

net/dns/dns_session.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_DNS_DNS_SESSION_H_
 #define NET_DNS_DNS_SESSION_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 13 matching lines @@
 namespace base {
 class BucketRanges;
 class SampleVector;
 }
 
 namespace net {
 
 class ClientSocketFactory;
 class DatagramClientSocket;
 class NetLog;
+struct NetLogSource;
 class StreamSocket;
 
 // Session parameters and state shared between DNS transactions.
 // Ref-counted so that DnsClient::Request can keep working in absence of
 // DnsClient. A DnsSession must be recreated when DnsConfig changes.
 class NET_EXPORT_PRIVATE DnsSession
     : NON_EXPORTED_BASE(public base::RefCounted<DnsSession>),
       public NetworkChangeNotifier::ConnectionTypeObserver {
  public:
   typedef base::Callback<int()> RandCallback;
@@ skipping 52 matching lines @@
   // Record server stats before it is destroyed.
   void RecordServerStats();
 
   // Return the timeout for the next query. |attempt| counts from 0 and is used
   // for exponential backoff.
   base::TimeDelta NextTimeout(unsigned server_index, int attempt);
 
   // Allocate a socket, already connected to the server address.
   // When the SocketLease is destroyed, the socket will be freed.
   std::unique_ptr<SocketLease> AllocateSocket(unsigned server_index,
-                                              const NetLog::Source& source);
+                                              const NetLogSource& source);
 
   // Creates a StreamSocket from the factory for a transaction over TCP. These
   // sockets are not pooled.
   std::unique_ptr<StreamSocket> CreateTCPSocket(unsigned server_index,
-                                                const NetLog::Source& source);
+                                                const NetLogSource& source);
 
   void ApplyPersistentData(const base::Value& data);
   std::unique_ptr<const base::Value> GetPersistentData() const;
 
  private:
   friend class base::RefCounted<DnsSession>;
   ~DnsSession() override;
 
   void UpdateTimeouts(NetworkChangeNotifier::ConnectionType type);
   void InitializeServerStats();
@@ skipping 33 matching lines @@
     RttBuckets();
   };
   static base::LazyInstance<RttBuckets>::Leaky rtt_buckets_;
 
   DISALLOW_COPY_AND_ASSIGN(DnsSession);
 };
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_SESSION_H_