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 e3a0ebb161608f6f9ccd18cb6b7eaa083804d92f..7ce5d0e1b19f29d99be7d29c6d901988bd788e5f 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:
@@ -444,7 +443,6 @@ 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
@@ -482,7 +480,6 @@ 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;