[promisehook] Add is_promisehook_enabled

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index 95fcc1c3afddb8e19178a7d460379725bc8cf840..bf0fb1f0606c424cdbe727b74a6a0b019239636c 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -1050,6 +1050,9 @@ class V8_EXPORT_PRIVATE CodeStubAssembler : public compiler::CodeAssembler {
   Node* ElementOffsetFromIndex(Node* index, ElementsKind kind,
                                ParameterMode mode, int base_size = 0);
 
+  // Promise helpers
+  Node* IsPromiseHookEnabled();
+
  protected:
   void DescriptorLookupLinear(Node* unique_name, Node* descriptors, Node* nof,
                               Label* if_found, Variable* var_name_index,