For unit tests, track additions to AtExitManager and warn.

base/test/unit_test.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 BASE_TEST_UNIT_TEST_H_
+#define BASE_TEST_UNIT_TEST_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+
+class AtExitManager;
+
+class UnitTest : public testing::Test {

[Scott Byer, 2012/06/18 23:45:57]

I'm not wedded to the class name here, but this seemed better than just 'Test'.

+ public:
+  UnitTest();
+  virtual ~UnitTest();
+
+ protected:
+  // testing::Test
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+ private:
+  base::AtExitManager* initial_top_manager_;
+  size_t at_exit_stack_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(UnitTest);
+};
+
+}  // namespace base
+
+#endif // BASE_TEST_UNIT_TEST_H_