diff --git a/src/factory.h b/src/factory.h
index dd107d1..2fa2901 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -16,8 +16,8 @@
 class Factory final {
  public:
   Handle<Oddball> NewOddball(Handle<Map> map, const char* to_string,
-                             Handle<Object> to_number, const char* type_of,
-                             byte kind);
+                             Handle<Object> to_number, bool to_boolean,
+                             const char* type_of, byte kind);
 
   // Allocates a fixed array initialized with undefined values.
   Handle<FixedArray> NewFixedArray(
@@ -256,6 +256,11 @@
                                  Handle<Context> previous,
                                  Handle<JSReceiver> extension);
 
+  Handle<Context> NewDebugEvaluateContext(Handle<Context> previous,
+                                          Handle<JSReceiver> extension,
+                                          Handle<Context> wrapped,
+                                          Handle<StringSet> whitelist);
+
   // Create a block context.
   Handle<Context> NewBlockContext(Handle<JSFunction> function,
                                   Handle<Context> previous,
@@ -389,6 +394,8 @@
   // JSObject that should have a memento pointing to the allocation site.
   Handle<JSObject> NewJSObjectWithMemento(Handle<JSFunction> constructor,
                                           Handle<AllocationSite> site);
+  // JSObject without a prototype.
+  Handle<JSObject> NewJSObjectWithNullProto();
 
   // Global objects are pretenured and initialized based on a constructor.
   Handle<JSGlobalObject> NewJSGlobalObject(Handle<JSFunction> constructor);
@@ -410,34 +417,30 @@
   // according to the specified mode.
   Handle<JSArray> NewJSArray(
       ElementsKind elements_kind, int length, int capacity,
-      Strength strength = Strength::WEAK,
       ArrayStorageAllocationMode mode = DONT_INITIALIZE_ARRAY_ELEMENTS,
       PretenureFlag pretenure = NOT_TENURED);
 
   Handle<JSArray> NewJSArray(
       int capacity, ElementsKind elements_kind = TERMINAL_FAST_ELEMENTS_KIND,
-      Strength strength = Strength::WEAK,
       PretenureFlag pretenure = NOT_TENURED) {
     if (capacity != 0) {
       elements_kind = GetHoleyElementsKind(elements_kind);
     }
-    return NewJSArray(elements_kind, 0, capacity, strength,
+    return NewJSArray(elements_kind, 0, capacity,
                       INITIALIZE_ARRAY_ELEMENTS_WITH_HOLE, pretenure);
   }
 
   // Create a JSArray with the given elements.
   Handle<JSArray> NewJSArrayWithElements(Handle<FixedArrayBase> elements,
                                          ElementsKind elements_kind, int length,
-                                         Strength strength = Strength::WEAK,
                                          PretenureFlag pretenure = NOT_TENURED);
 
   Handle<JSArray> NewJSArrayWithElements(
       Handle<FixedArrayBase> elements,
       ElementsKind elements_kind = TERMINAL_FAST_ELEMENTS_KIND,
-      Strength strength = Strength::WEAK,
       PretenureFlag pretenure = NOT_TENURED) {
     return NewJSArrayWithElements(elements, elements_kind, elements->length(),
-                                  strength, pretenure);
+                                  pretenure);
   }
 
   void NewJSArrayStorage(
@@ -631,8 +634,7 @@
   // Allocates a new SharedFunctionInfo object.
   Handle<SharedFunctionInfo> NewSharedFunctionInfo(
       Handle<String> name, int number_of_literals, FunctionKind kind,
-      Handle<Code> code, Handle<ScopeInfo> scope_info,
-      Handle<TypeFeedbackVector> feedback_vector);
+      Handle<Code> code, Handle<ScopeInfo> scope_info);
   Handle<SharedFunctionInfo> NewSharedFunctionInfo(Handle<String> name,
                                                    MaybeHandle<Code> code,
                                                    bool is_constructor);
@@ -651,7 +653,6 @@
   // native context.
   Handle<Map> ObjectLiteralMapFromCache(Handle<Context> context,
                                         int number_of_properties,
-                                        bool is_strong,
                                         bool* is_result_from_cache);
 
   // Creates a new FixedArray that holds the data associated with the
@@ -710,7 +711,6 @@
 
   // Create a JSArray with no elements and no length.
   Handle<JSArray> NewJSArray(ElementsKind elements_kind,
-                             Strength strength = Strength::WEAK,
                              PretenureFlag pretenure = NOT_TENURED);
 };