Update from https://crrev.com/304121

net/base/net_log.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_BASE_NET_LOG_H_
 #define NET_BASE_NET_LOG_H_
 
 #include <string>
 
 #include "base/atomicops.h"
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/synchronization/lock.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 
 namespace base {
 class DictionaryValue;
 class Value;
 }
 
 namespace net {
 
 // NetLog is the destination for log messages generated by the network stack.
 // Each log message has a "source" field which identifies the specific entity
 // that generated the message (for example, which URLRequest or which
-// SocketStream).
+// SpdySession).
 //
 // To avoid needing to pass in the "source ID" to the logging functions, NetLog
 // is usually accessed through a BoundNetLog, which will always pass in a
 // specific source ID.
 //
 // All methods are thread safe, with the exception that no NetLog or
 // NetLog::ThreadSafeObserver functions may be called by an observer's
 // OnAddEntry() method.  Doing so will result in a deadlock.
 //
 // For a broader introduction see the design document:
@@ skipping 351 matching lines @@
       : source_(source), net_log_(net_log) {
   }
 
   NetLog::Source source_;
   NetLog* net_log_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_LOG_H_