A pair of NetLog changes for ongoing refactoring:

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_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/string16.h"

[mmenke, 2012/06/13 19:42:13]

I don't believe typedefs can be forward declared.

 #include "net/base/net_export.h"
 
 namespace base {
 class DictionaryValue;
 class TimeTicks;
 class Value;
 }
 
 namespace net {
 
@@ skipping 273 matching lines @@
   // Warning: |name| must remain valid for the life of the callback.
   static ParametersCallback IntegerCallback(const char* name, int value);
 
   // Creates a ParametersCallback that encapsulates a single UTF8 string.  Takes
   // |value| as a pointer to avoid copying, and emphasize it must be valid for
   // the life of the callback.  |value| may not be NULL.
   // Warning: |name| and |value| must remain valid for the life of the callback.
   static ParametersCallback StringCallback(const char* name,
                                            const std::string* value);
 
+  // Same as above, but takes in a UTF16 string.
+  static ParametersCallback StringCallback(const char* name,
+                                           const string16* value);
+
  protected:
   // Child classes should respond to the new entry here.  This includes
   // creating the Entry object and alerting their observers.
   virtual void OnAddEntry(const Entry& entry) = 0;
 
   // Subclasses must call these in the corresponding functions to set an
   // observer's |net_log_| and |log_level_| values.
   void OnAddObserver(ThreadSafeObserver* observer, LogLevel log_level);
   void OnSetObserverLogLevel(ThreadSafeObserver* observer,
                              LogLevel log_level);
@@ skipping 156 matching lines @@
   virtual ~NetLogSourceParameter() {}
 
  private:
   const char* name_;
   const NetLog::Source value_;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_LOG_H_