Make unittests work in component build

src/heap/memory-reducer.h

 // Copyright 2015 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_memory_reducer_H
 #define V8_HEAP_memory_reducer_H
 
 #include "include/v8-platform.h"
 #include "src/base/macros.h"
 #include "src/cancelable-task.h"
+#include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 
 class Heap;
 
 
 // The goal of the MemoryReducer class is to detect transition of the mutator
 // from high allocation phase to low allocation phase and to collect potential
 // garbage created in the high allocation phase.
@@ skipping 51 matching lines @@
 //       (n > 1 and there is no more garbage to be collected) or
 //       n == kMaxNumberOfGCs.
 // RUN n t -> WAIT n (now_ms + short_delay_ms) now_ms happens:
 //     - at end of the incremental GC initiated by the MemoryReducer if
 //       (n == 1 or there is more garbage to be collected) and
 //       n < kMaxNumberOfGCs.
 //
 // now_ms is the current time,
 // t' is t if the current event is not a GC event and is now_ms otherwise,
 // long_delay_ms, short_delay_ms, and watchdog_delay_ms are constants.
-class MemoryReducer {
+class V8_EXPORT_PRIVATE MemoryReducer {
  public:
   enum Action { kDone, kWait, kRun };
 
   struct State {
     State(Action action, int started_gcs, double next_gc_start_ms,
           double last_gc_time_ms)
         : action(action),
           started_gcs(started_gcs),
           next_gc_start_ms(next_gc_start_ms),
           last_gc_time_ms(last_gc_time_ms) {}
@@ skipping 65 matching lines @@
 
   // Used in cctest.
   friend class HeapTester;
   DISALLOW_COPY_AND_ASSIGN(MemoryReducer);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_memory_reducer_H