[strong] Refactor ObjectStrength into a replacement for strong boolean args

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 8b6fadab6f4696c46b30fc09337efcdbb57a1ea0..cd00487c7a397418bf1aa4b42f175a33247b559d 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -390,23 +390,21 @@ class Factory final {
   // JS arrays are pretenured when allocated by the parser.
 
   // Create a JSArray with no elements.
-  Handle<JSArray> NewJSArray(
-      ElementsKind elements_kind,
-      ObjectStrength strength = WEAK,
-      PretenureFlag pretenure = NOT_TENURED);
+  Handle<JSArray> NewJSArray(ElementsKind elements_kind,
+                             Strength strength = Strength::WEAK,
+                             PretenureFlag pretenure = NOT_TENURED);
 
   // Create a JSArray with a specified length and elements initialized
   // according to the specified mode.
   Handle<JSArray> NewJSArray(
       ElementsKind elements_kind, int length, int capacity,
-      ObjectStrength strength = WEAK,
+      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,
-      ObjectStrength strength = WEAK,
+      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);
@@ -416,17 +414,15 @@ class Factory final {
   }
 
   // Create a JSArray with the given elements.
-  Handle<JSArray> NewJSArrayWithElements(
-      Handle<FixedArrayBase> elements,
-      ElementsKind elements_kind,
-      int length,
-      ObjectStrength strength = WEAK,
-      PretenureFlag pretenure = NOT_TENURED);
+  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,
-      ObjectStrength strength = WEAK,
+      Strength strength = Strength::WEAK,
       PretenureFlag pretenure = NOT_TENURED) {
     return NewJSArrayWithElements(elements, elements_kind, elements->length(),
                                   strength, pretenure);