Update NetLog to be thread safe.

net/http/http_auth_handler_unittest.cc

 // Copyright (c) 2010 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.
 
 #include "net/http/http_auth_handler.h"
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "net/base/capturing_net_log.h"
 #include "net/base/net_errors.h"
@@ skipping 31 matching lines @@
         BoundNetLog bound_net_log(source, &capturing_net_log);
 
         mock_handler.InitFromChallenge(&tokenizer, target,
                                        origin, bound_net_log);
         mock_handler.SetGenerateExpectation(async, rv);
         mock_handler.GenerateAuthToken(&username, &password, &request,
                                        &test_callback, &auth_token);
         if (async)
           test_callback.WaitForResult();
 
-        EXPECT_EQ(2u, capturing_net_log.entries().size());
-        EXPECT_TRUE(LogContainsBeginEvent(capturing_net_log.entries(),
-                                          0, event_type));
-        EXPECT_TRUE(LogContainsEndEvent(capturing_net_log.entries(),
-                                        1, event_type));
+        net::CapturingNetLog::EntryList entries;
+        capturing_net_log.GetEntries(&entries);
+
+        EXPECT_EQ(2u, entries.size());
+        EXPECT_TRUE(LogContainsBeginEvent(entries, 0, event_type));
+        EXPECT_TRUE(LogContainsEndEvent(entries, 1, event_type));
       }
     }
   }
 }
 
 }  // namespace net