Oilpan: Enable lazy sweeping on non-oilpan builds

Source/platform/heap/HeapTest.cpp

 /*
  * 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 1782 matching lines @@
         Persistent<SimpleFinalizedObject> finalized = SimpleFinalizedObject::create();
         EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
         Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithSweep, Heap::ForcedGC);
         EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
     }
 
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithSweep, Heap::ForcedGC);
     EXPECT_EQ(1, SimpleFinalizedObject::s_destructorCalls);
 }
 
-// FIXME: Lazy sweeping is disabled in non-oilpan builds.
-#if ENABLE(OILPAN)
 TEST(HeapTest, LazySweepingPages)
 {
     clearOutOldGarbage();
 
     SimpleFinalizedObject::s_destructorCalls = 0;
     EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
     for (int i = 0; i < 1000; i++)
         SimpleFinalizedObject::create();
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithoutSweep, Heap::ForcedGC);
     EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
@@ skipping 18 matching lines @@
         EXPECT_EQ(i + 1, LargeHeapObject::s_destructorCalls);
     }
     LargeHeapObject::create();
     LargeHeapObject::create();
     EXPECT_EQ(10, LargeHeapObject::s_destructorCalls);
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithoutSweep, Heap::ForcedGC);
     EXPECT_EQ(10, LargeHeapObject::s_destructorCalls);
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithSweep, Heap::ForcedGC);
     EXPECT_EQ(22, LargeHeapObject::s_destructorCalls);
 }
-#endif
 
 TEST(HeapTest, Finalization)
 {
     {
         HeapTestSubClass* t1 = HeapTestSubClass::create();
         HeapTestSubClass* t2 = HeapTestSubClass::create();
         HeapTestSuperClass* t3 = HeapTestSuperClass::create();
         // FIXME(oilpan): Ignore unused variables.
         (void)t1;
         (void)t2;
@@ skipping 4149 matching lines @@
 {
     Persistent<ClassWithMember> object = ClassWithMember::create();
     EXPECT_EQ(0, object->traceCount());
     TestMixinAllocatingObject* mixin = TestMixinAllocatingObject::create(object.get());
     EXPECT_TRUE(mixin);
     EXPECT_GT(object->traceCount(), 0);
     EXPECT_GT(mixin->traceCount(), 0);
 }
 
 } // namespace blink