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diff --git a/cc/test/mock_helper.h b/cc/test/mock_helper.h
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+// Copyright 2015 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 CC_TEST_MOCK_HELPER_H_
+#define CC_TEST_MOCK_HELPER_H_
+
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest-spi.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#define EXPECT_MOCK_FAILURE(statement) \
+ do { \
+ class GTestExpectMockFailureHelper { \
+ public: \
+ static void Execute() { statement; } \
+ }; \
+ ::testing::TestPartResultArray gtest_failures; \
+ { \
+ ::testing::ScopedFakeTestPartResultReporter gtest_reporter( \
+ ::testing::ScopedFakeTestPartResultReporter:: \
+ INTERCEPT_ONLY_CURRENT_THREAD, \
+ &gtest_failures); \
+ GTestExpectMockFailureHelper::Execute(); \
+ } \
+ EXPECT_GT(gtest_failures.size(), 0); \
+ } while (::testing::internal::AlwaysFalse())
+
+#endif // CC_TEST_MOCK_HELPER_H_