Split an allocation policy into an allocator and a deallocator.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 0c97abd89e8e186722834fad855f9adc4141783b..38d381edc4d49964799ec0878d84d43ade52621c 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -256,7 +256,7 @@ void Isolate::PreallocatedStorageInit(size_t size) {
 
 void* Isolate::PreallocatedStorageNew(size_t size) {
   if (!preallocated_storage_preallocated_) {
-    return FreeStoreAllocationPolicy::New(size);
+    return FreeStoreAllocator().New(size);
   }
   ASSERT(free_list_.next_ != &free_list_);
   ASSERT(free_list_.previous_ != &free_list_);
@@ -302,7 +302,7 @@ void Isolate::PreallocatedStorageDelete(void* p) {
     return;
   }
   if (!preallocated_storage_preallocated_) {
-    FreeStoreAllocationPolicy::Delete(p);
+    FreeStoreDeallocator().Delete(p);
     return;
   }
   PreallocatedStorage* storage = reinterpret_cast<PreallocatedStorage*>(p) - 1;