Merge heap unit tests into src.

test/heap-unittests/heap-unittest.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_HEAP_UNITTESTS_HEAP_UNITTEST_H_
-#define V8_HEAP_UNITTESTS_HEAP_UNITTEST_H_
-
-#include "src/heap/gc-idle-time-handler.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace v8 {
-namespace internal {
-
-class GCIdleTimeHandlerTest : public ::testing::Test {
- public:
-  GCIdleTimeHandlerTest() {}
-  virtual ~GCIdleTimeHandlerTest() {}
-
-  GCIdleTimeHandler* handler() { return &handler_; }
-
-  GCIdleTimeHandler::HeapState DefaultHeapState() {
-    GCIdleTimeHandler::HeapState result;
-    result.contexts_disposed = 0;
-    result.size_of_objects = kSizeOfObjects;
-    result.incremental_marking_stopped = false;
-    result.can_start_incremental_marking = true;
-    result.sweeping_in_progress = false;
-    result.mark_compact_speed_in_bytes_per_ms = kMarkCompactSpeed;
-    result.incremental_marking_speed_in_bytes_per_ms = kMarkingSpeed;
-    return result;
-  }
-
-  static const size_t kSizeOfObjects = 100 * MB;
-  static const size_t kMarkCompactSpeed = 100 * KB;
-  static const size_t kMarkingSpeed = 100 * KB;
-
- private:
-  GCIdleTimeHandler handler_;
-};
-}
-}
-#endif  // V8_HEAP_UNITTESTS_HEAP_UNITTEST_H_