BASELINE: Update Chromium to 85.0.4183.14085-based

Change-Id: Iaa42f4680837c57725b1344f108c0196741f6057
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

1 files changed, 8 insertions, 1 deletions

diff --git a/chromium/v8/include/cppgc/internal/persistent-node.h b/chromium/v8/include/cppgc/internal/persistent-node.h
index 11cf69623e8..e05efe36213 100644
--- a/chromium/v8/include/cppgc/internal/persistent-node.h
+++ b/chromium/v8/include/cppgc/internal/persistent-node.h
@@ -56,6 +56,11 @@ class PersistentNode final {
 
   bool IsUsed() const { return trace_; }
 
+  void* owner() const {
+    CPPGC_DCHECK(IsUsed());
+    return owner_;
+  }
+
  private:
   // PersistentNode acts as a designated union:
   // If trace_ != nullptr, owner_ points to the corresponding Persistent handle.
@@ -67,11 +72,13 @@ class PersistentNode final {
   TraceCallback trace_ = nullptr;
 };
 
-class V8_EXPORT PersistentRegion {
+class V8_EXPORT PersistentRegion final {
   using PersistentNodeSlots = std::array<PersistentNode, 256u>;
 
  public:
   PersistentRegion() = default;
+  // Clears Persistent fields to avoid stale pointers after heap teardown.
+  ~PersistentRegion();
 
   PersistentRegion(const PersistentRegion&) = delete;
   PersistentRegion& operator=(const PersistentRegion&) = delete;