[api] Remove marking persistents as partially dependent

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 7db8ee7937fef605088611029bb7245a5675e55a..3e61950b1e2a6fcf7cd263795e8c14fdb83a2bac 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -574,18 +574,6 @@ template <class T> class PersistentBase {
   V8_INLINE void MarkIndependent();
 
   /**
-   * Marks the reference to this object partially dependent. Partially dependent
-   * handles only depend on other partially dependent handles and these
-   * dependencies are provided through object groups. It provides a way to build
-   * smaller object groups for young objects that represent only a subset of all
-   * external dependencies. This mark is automatically cleared after each
-   * garbage collection.
-   */
-  V8_INLINE V8_DEPRECATED(
-      "deprecated optimization, do not use partially dependent groups",
-      void MarkPartiallyDependent());
-
-  /**
    * Marks the reference to this object as active. The scavenge garbage
    * collection should not reclaim the objects marked as active.
    * This bit is cleared after the each garbage collection pass.
@@ -8326,7 +8314,6 @@ class Internals {
   static const int kNodeStateIsPendingValue = 3;
   static const int kNodeStateIsNearDeathValue = 4;
   static const int kNodeIsIndependentShift = 3;
-  static const int kNodeIsPartiallyDependentShift = 4;
   static const int kNodeIsActiveShift = 4;
 
   static const int kJSObjectType = 0xbc;
@@ -8622,17 +8609,6 @@ void PersistentBase<T>::MarkIndependent() {
                     I::kNodeIsIndependentShift);
 }
 
-
-template <class T>
-void PersistentBase<T>::MarkPartiallyDependent() {
-  typedef internal::Internals I;
-  if (this->IsEmpty()) return;
-  I::UpdateNodeFlag(reinterpret_cast<internal::Object**>(this->val_),
-                    true,
-                    I::kNodeIsPartiallyDependentShift);
-}
-
-
 template <class T>
 void PersistentBase<T>::MarkActive() {
   typedef internal::Internals I;