[runtime] Allocate space for computed property names

src/ast/ast.h

Index: src/ast/ast.h
diff --git a/src/ast/ast.h b/src/ast/ast.h
index af561e0a3f99124542c9010b589ddaa37fe324d7..691fcb7016b52b1636d5155ed52d147b2f31d659 100644
--- a/src/ast/ast.h
+++ b/src/ast/ast.h
@@ -1469,9 +1469,11 @@ class ObjectLiteral final : public MaterializedLiteral {
   friend class AstNodeFactory;
 
   ObjectLiteral(ZoneList<Property*>* properties, int literal_index,
-                uint32_t boilerplate_properties, int pos)
+                uint32_t boilerplate_properties, uint32_t total_properties,
+                int pos)
       : MaterializedLiteral(literal_index, pos, kObjectLiteral),
         boilerplate_properties_(boilerplate_properties),
+        total_properties_(total_properties),
         properties_(properties) {
     bit_field_ |= FastElementsField::encode(false) |
                   HasElementsField::encode(false) |
@@ -1482,6 +1484,8 @@ class ObjectLiteral final : public MaterializedLiteral {
   int local_id(int n) const { return base_id() + parent_num_ids() + n; }
 
   uint32_t boilerplate_properties_;
+  // Includes properties with computed names.
+  uint32_t total_properties_;
   Handle<FixedArray> constant_properties_;
   ZoneList<Property*>* properties_;
 
@@ -3329,9 +3333,10 @@ class AstNodeFactory final BASE_EMBEDDED {
 
   ObjectLiteral* NewObjectLiteral(
       ZoneList<ObjectLiteral::Property*>* properties, int literal_index,
-      uint32_t boilerplate_properties, int pos) {
+      uint32_t boilerplate_properties, uint32_t total_properties, int pos) {
     return new (zone_)
-        ObjectLiteral(properties, literal_index, boilerplate_properties, pos);
+        ObjectLiteral(properties, literal_index, boilerplate_properties,
+                      total_properties, pos);
   }
 
   ObjectLiteral::Property* NewObjectLiteralProperty(