Remove orphaned pages from Oilpan

third_party/WebKit/Source/platform/heap/Heap.h

Index: third_party/WebKit/Source/platform/heap/Heap.h
diff --git a/third_party/WebKit/Source/platform/heap/Heap.h b/third_party/WebKit/Source/platform/heap/Heap.h
index fd9efc02c1183ba3f30370720d6775e87527093d..426a95bf4c1c0899b185d9c7b1a11c01c81db893 100644
--- a/third_party/WebKit/Source/platform/heap/Heap.h
+++ b/third_party/WebKit/Source/platform/heap/Heap.h
@@ -48,7 +48,6 @@
 namespace blink {
 
 class FreePagePool;
-class OrphanedPagePool;
 
 class PLATFORM_EXPORT HeapAllocHooks {
  public:
@@ -446,7 +445,6 @@ class PLATFORM_EXPORT ThreadHeap {
   void flushHeapDoesNotContainCache();
 
   FreePagePool* getFreePagePool() { return m_freePagePool.get(); }
-  OrphanedPagePool* getOrphanedPagePool() { return m_orphanedPagePool.get(); }
 
   // This look-up uses the region search tree and a negative contains cache to
   // provide an efficient mapping from arbitrary addresses to the containing
@@ -484,7 +482,6 @@ class PLATFORM_EXPORT ThreadHeap {
   std::unique_ptr<HeapDoesNotContainCache> m_heapDoesNotContainCache;
   std::unique_ptr<SafePointBarrier> m_safePointBarrier;
   std::unique_ptr<FreePagePool> m_freePagePool;
-  std::unique_ptr<OrphanedPagePool> m_orphanedPagePool;
   std::unique_ptr<CallbackStack> m_markingStack;
   std::unique_ptr<CallbackStack> m_postMarkingCallbackStack;
   std::unique_ptr<CallbackStack> m_globalWeakCallbackStack;