Disable collection backing reallocation during pre finalizer

third_party/WebKit/Source/platform/wtf/HashTable.h

Index: third_party/WebKit/Source/platform/wtf/HashTable.h
diff --git a/third_party/WebKit/Source/platform/wtf/HashTable.h b/third_party/WebKit/Source/platform/wtf/HashTable.h
index 0907c7420f897798365749fadea97240eb6041d2..17eb2512571fcba5401b2514c24e4129539fac6d 100644
--- a/third_party/WebKit/Source/platform/wtf/HashTable.h
+++ b/third_party/WebKit/Source/platform/wtf/HashTable.h
@@ -836,6 +836,7 @@ class HashTable final
     // expensive.
     return key_count_ * kMinLoad < table_size_ &&
            table_size_ > KeyTraits::kMinimumTableSize &&
+           Allocator::IsBackingReallocationAllowed() &&
            Allocator::IsAllocationAllowed();

[haraken, 2017/04/12 06:44:34]

Do you know what the IsAllocationAllowed check is for?

[keishi, 2017/04/12 09:43:53]

Used IsAllocationAllowed instead of adding a new flag.

   }
   ValueType* Expand(ValueType* entry = 0);
@@ -1230,6 +1231,7 @@ typename HashTable<Key,
                    Allocator>::AddResult
 HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::
     insert(T&& key, Extra&& extra) {
+  DCHECK(Allocator::IsBackingReallocationAllowed());
   DCHECK(!AccessForbidden());
   DCHECK(Allocator::IsAllocationAllowed());
   if (!table_)
@@ -1616,6 +1618,7 @@ template <typename Key,
 Value*
 HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Allocator>::
     Expand(Value* entry) {
+  DCHECK(Allocator::IsBackingReallocationAllowed());
   unsigned new_size;
   if (!table_size_) {
     new_size = KeyTraits::kMinimumTableSize;