New test infrastructure for producing verbose logs in failing tests.

base/logging_win.h

Index: base/logging_win.h
diff --git a/base/logging_win.h b/base/logging_win.h
index d0758cd52f074240d86adf7defec2dd34ba8726f..4457569ee9bc8e341548f72853979f82e2900db1 100644
--- a/base/logging_win.h
+++ b/base/logging_win.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -19,7 +19,7 @@ struct StaticMemorySingletonTraits;
 namespace logging {
 
 // Event ID for the log messages we generate.
-extern const GUID kLogEventId;
+BASE_EXPORT extern const GUID kLogEventId;
 
 // Feature enable mask for LogEventProvider.
 enum LogEnableMask {