[stubs] Cleanup CSA::BitFieldDecode() and friends.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index a592c86a067e0a258219394db6bd9bb87cfae73c..1ac342d62b1a4186d5f5643e803d27101abb5a91 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -2107,7 +2107,7 @@ void Interpreter::DoCreateObjectLiteral(InterpreterAssembler* assembler) {
   Label if_fast_clone(assembler),
       if_not_fast_clone(assembler, Label::kDeferred);
   Node* fast_clone_properties_count =
-      __ BitFieldDecode<CreateObjectLiteralFlags::FastClonePropertiesCountBits>(
+      __ DecodeWord32<CreateObjectLiteralFlags::FastClonePropertiesCountBits>(
           bytecode_flags);
   __ Branch(fast_clone_properties_count, &if_fast_clone, &if_not_fast_clone);