Cleanup: we are not patching entries any longer

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 934697ec3b3f7ed2a6493d5dfdf2b10aa11ea329..3bfe15e4e5ea3f5a6a0ab0304b30176cf82bb783 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -4353,6 +4353,20 @@ class Code : public Object {
   bool IsStubCode() const;
   bool IsFunctionCode() const;
 
+  void DisableDartCode() const;
+
+  void DisableStubCode() const;
+
+  void Enable() const {
+    if (!IsDisabled()) return;
+    ASSERT(instructions() != active_instructions());
+    set_active_instructions(instructions());
+  }
+
+  bool IsDisabled() const {
+    return instructions() != active_instructions();
+  }
+
  private:
   void set_state_bits(intptr_t bits) const;