Reland "Remove the weak list of views from array buffers"

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index d60a3f079b035e1e6bf98b5a944dbe33b3023452..dcf7bdea0ac812972304bd382d52b0a1f4c5eff2 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -883,13 +883,6 @@ class Heap {
     return last_array_buffer_in_list_;
   }
 
-  void set_new_array_buffer_views_list(Object* object) {
-    new_array_buffer_views_list_ = object;
-  }
-  Object* new_array_buffer_views_list() const {
-    return new_array_buffer_views_list_;
-  }
-
   void set_allocation_sites_list(Object* object) {
     allocation_sites_list_ = object;
   }
@@ -1496,18 +1489,6 @@ class Heap {
 
   bool deserialization_complete() const { return deserialization_complete_; }
 
-  bool migration_failure() const { return migration_failure_; }
-  void set_migration_failure(bool migration_failure) {
-    migration_failure_ = migration_failure;
-  }
-
-  bool previous_migration_failure() const {
-    return previous_migration_failure_;
-  }
-  void set_previous_migration_failure(bool previous_migration_failure) {
-    previous_migration_failure_ = previous_migration_failure;
-  }
-
  protected:
   // Methods made available to tests.
 
@@ -1682,11 +1663,6 @@ class Heap {
   Object* last_array_buffer_in_list_;
   Object* allocation_sites_list_;
 
-  // This is a global list of array buffer views in new space. When the views
-  // get promoted, they are removed form the list and added to the corresponding
-  // array buffer.
-  Object* new_array_buffer_views_list_;
-
   // List of encountered weak collections (JSWeakMap and JSWeakSet) during
   // marking. It is initialized during marking, destroyed after marking and
   // contains Smi(0) while marking is not active.
@@ -2017,7 +1993,6 @@ class Heap {
 
   void ProcessNativeContexts(WeakObjectRetainer* retainer);
   void ProcessArrayBuffers(WeakObjectRetainer* retainer, bool stop_after_young);
-  void ProcessNewArrayBufferViews(WeakObjectRetainer* retainer);
   void ProcessAllocationSites(WeakObjectRetainer* retainer);
 
   // Deopts all code that contains allocation instruction which are tenured or
@@ -2177,13 +2152,6 @@ class Heap {
 
   bool concurrent_sweeping_enabled_;
 
-  // A migration failure indicates that a semi-space copy of an object during
-  // a scavenge failed and the object got promoted instead.
-  bool migration_failure_;
-
-  // A migration failure happened in the previous scavenge.
-  bool previous_migration_failure_;
-
   friend class AlwaysAllocateScope;
   friend class Deserializer;
   friend class Factory;