[interpreter] Simplify ConstantArrayBuilder interface a bit.

src/interpreter/constant-array-builder.cc

Index: src/interpreter/constant-array-builder.cc
diff --git a/src/interpreter/constant-array-builder.cc b/src/interpreter/constant-array-builder.cc
index 2586e1ff4d5c443ce53db6782266d2a15f620cd9..a4a52c669813ecfb8e3fb7d9c4119c76bbef3807 100644
--- a/src/interpreter/constant-array-builder.cc
+++ b/src/interpreter/constant-array-builder.cc
@@ -86,9 +86,9 @@ Handle<Object> ConstantArrayBuilder::At(size_t index) const {
 }
 
 
-Handle<FixedArray> ConstantArrayBuilder::ToFixedArray(Factory* factory) const {
-  Handle<FixedArray> fixed_array =
-      factory->NewFixedArray(static_cast<int>(size()), PretenureFlag::TENURED);
+Handle<FixedArray> ConstantArrayBuilder::ToFixedArray() const {
+  Handle<FixedArray> fixed_array = isolate_->factory()->NewFixedArray(
+      static_cast<int>(size()), PretenureFlag::TENURED);
   for (int i = 0; i < fixed_array->length(); i++) {
     fixed_array->set(i, *At(static_cast<size_t>(i)));
   }