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

src/heap/objects-visiting-inl.h

Index: src/heap/objects-visiting-inl.h
diff --git a/src/heap/objects-visiting-inl.h b/src/heap/objects-visiting-inl.h
index 06fa10ef042fc731260bc6aadb010066bfea82a5..39803b1a2c98db9db392a6a0f360e3ba250c2dd0 100644
--- a/src/heap/objects-visiting-inl.h
+++ b/src/heap/objects-visiting-inl.h
@@ -80,14 +80,12 @@ int StaticNewSpaceVisitor<StaticVisitor>::VisitJSArrayBuffer(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
 
-  STATIC_ASSERT(JSArrayBuffer::kWeakFirstViewOffset ==
-                JSArrayBuffer::kWeakNextOffset + kPointerSize);
   VisitPointers(heap, HeapObject::RawField(
                           object, JSArrayBuffer::BodyDescriptor::kStartOffset),
                 HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
   VisitPointers(
-      heap, HeapObject::RawField(
-                object, JSArrayBuffer::kWeakNextOffset + 2 * kPointerSize),
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
   return JSArrayBuffer::kSizeWithInternalFields;
 }
@@ -99,10 +97,6 @@ int StaticNewSpaceVisitor<StaticVisitor>::VisitJSTypedArray(
   VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSTypedArray::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSTypedArray::kWeakNextOffset));
-  VisitPointers(
-      map->GetHeap(), HeapObject::RawField(
-                          object, JSTypedArray::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSTypedArray::kSizeWithInternalFields));
   return JSTypedArray::kSizeWithInternalFields;
 }
@@ -114,10 +108,6 @@ int StaticNewSpaceVisitor<StaticVisitor>::VisitJSDataView(Map* map,
   VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSDataView::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset));
-  VisitPointers(
-      map->GetHeap(),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSDataView::kSizeWithInternalFields));
   return JSDataView::kSizeWithInternalFields;
 }
@@ -540,15 +530,13 @@ void StaticMarkingVisitor<StaticVisitor>::VisitJSArrayBuffer(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
 
-  STATIC_ASSERT(JSArrayBuffer::kWeakFirstViewOffset ==
-                JSArrayBuffer::kWeakNextOffset + kPointerSize);
   StaticVisitor::VisitPointers(
       heap,
       HeapObject::RawField(object, JSArrayBuffer::BodyDescriptor::kStartOffset),
       HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
   StaticVisitor::VisitPointers(
-      heap, HeapObject::RawField(
-                object, JSArrayBuffer::kWeakNextOffset + 2 * kPointerSize),
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
 }
 
@@ -559,10 +547,6 @@ void StaticMarkingVisitor<StaticVisitor>::VisitJSTypedArray(
   StaticVisitor::VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSTypedArray::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSTypedArray::kWeakNextOffset));
-  StaticVisitor::VisitPointers(
-      map->GetHeap(), HeapObject::RawField(
-                          object, JSTypedArray::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSTypedArray::kSizeWithInternalFields));
 }
 
@@ -573,10 +557,6 @@ void StaticMarkingVisitor<StaticVisitor>::VisitJSDataView(Map* map,
   StaticVisitor::VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSDataView::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset));
-  StaticVisitor::VisitPointers(
-      map->GetHeap(),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSDataView::kSizeWithInternalFields));
 }