Add initial support for compiler unit tests using GTest/GMock.

test/compiler-unittests/compiler-unittests.h

Index: test/compiler-unittests/compiler-unittests.h
diff --git a/test/compiler-unittests/compiler-unittests.h b/test/compiler-unittests/compiler-unittests.h
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+++ b/test/compiler-unittests/compiler-unittests.h
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+// 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_COMPILER_UNITTESTS_COMPILER_UNITTESTS_H_
+#define V8_COMPILER_UNITTESTS_COMPILER_UNITTESTS_H_
+
+#include "include/v8.h"
+#include "src/zone.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// 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
+#define COMPILER_TEST(Case, Name) TEST(Case, DISABLED_##Name)
+#endif
+
+
+// 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
+#define COMPILER_TEST_F(Case, Name) TEST_F(Case, DISABLED_##Name)
+#endif
+
+
+class CompilerTest : public ::testing::Test {
+ public:
+  CompilerTest();
+  virtual ~CompilerTest();
+
+  Isolate* isolate() const { return reinterpret_cast<Isolate*>(isolate_); }
+  Zone* zone() { return &zone_; }
+
+ protected:
+  static void SetUpTestCase();
+  static void TearDownTestCase();
+
+ private:
+  static v8::Isolate* isolate_;
+  v8::Isolate::Scope isolate_scope_;
+  v8::HandleScope handle_scope_;
+  v8::Context::Scope context_scope_;
+  Zone zone_;
+};
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_UNITTESTS_COMPILER_UNITTESTS_H_