Oilpan: Add ENABLE_LAZY_SWEEPING and ENABLE_IDLE_GC to features.gypi

Source/platform/heap/Heap.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 811 matching lines @@
     // and finalized. The predicate returns false in all other cases.
     //
     // Holding a reference to an already-dead object is not a valid state
     // to be in; willObjectBeLazilySwept() has undefined behavior if passed
     // such a reference.
     template<typename T>
     NO_LAZY_SWEEP_SANITIZE_ADDRESS
     static bool willObjectBeLazilySwept(const T* objectPointer)
     {
         static_assert(IsGarbageCollectedType<T>::value, "only objects deriving from GarbageCollected can be used.");
-#if ENABLE_LAZY_SWEEPING
+#if ENABLE(LAZY_SWEEPING)
         BasePage* page = pageFromObject(objectPointer);
         if (page->hasBeenSwept())
             return false;
         ASSERT(page->heap()->threadState()->isSweepingInProgress());
 
         return !ObjectAliveTrait<T>::isHeapObjectAlive(s_markingVisitor, const_cast<T*>(objectPointer));
 #else
         return false;
 #endif
     }
@@ skipping 256 matching lines @@
             if (size < 32)
                 return NormalPage1HeapIndex;
             return NormalPage2HeapIndex;
         }
         if (size < 128)
             return NormalPage3HeapIndex;
         return NormalPage4HeapIndex;
     }
 };
 
-#if ENABLE_LAZY_SWEEPING
+#if ENABLE(LAZY_SWEEPING)
 #define EAGERLY_FINALIZE() typedef int IsEagerlyFinalizedMarker
 #define EAGERLY_FINALIZE_WILL_BE_REMOVED()
 #else
 #define EAGERLY_FINALIZE()
 // TODO(Oilpan): define in terms of Oilpan's EAGERLY_FINALIZE() once lazy
 // sweeping is enabled non-Oilpan.
 #define EAGERLY_FINALIZE_WILL_BE_REMOVED()
 #endif
 
 template<typename T>
@@ skipping 173 matching lines @@
     size_t copySize = previousHeader->payloadSize();
     if (copySize > size)
         copySize = size;
     memcpy(address, previous, copySize);
     return address;
 }
 
 } // namespace blink
 
 #endif // Heap_h