Revert "Initial import of unittests using GTest/GMock."

test/unittests/unittests.h

-// Copyright 2014 the V8 project 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 V8_UNITTESTS_UNITTESTS_H_
-#define V8_UNITTESTS_UNITTESTS_H_
-
-#include "src/compiler/pipeline.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-// The COMPILER_TEST(Case, Name) macro works just like
-// TEST(Case, Name), except that the test is disabled
-// if the platform is not a supported TurboFan target.
-#if V8_TURBOFAN_TARGET
-#define COMPILER_TEST(Case, Name) TEST(Case, Name)
-#else  // V8_TURBOFAN_TARGET
-#define COMPILER_TEST(Case, Name) TEST(Case, DISABLED_##Name)
-#endif  // V8_TURBOFAN_TARGET
-
-
-// The COMPILER_TEST_F(Case, Name) macro works just like
-// TEST_F(Case, Name), except that the test is disabled
-// if the platform is not a supported TurboFan target.
-#if V8_TURBOFAN_TARGET
-#define COMPILER_TEST_F(Case, Name) TEST_F(Case, Name)
-#else  // V8_TURBOFAN_TARGET
-#define COMPILER_TEST_F(Case, Name) TEST_F(Case, DISABLED_##Name)
-#endif  // V8_TURBOFAN_TARGET
-
-namespace v8 {
-namespace internal {
-
-class EngineTest : public ::testing::Test {
- public:
-  virtual ~EngineTest() {}
-
-  static void SetUpTestCase();
-  static void TearDownTestCase();
-
- private:
-  static v8::Platform* platform_;
-};
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_UNITTESTS_UNITTESTS_H_