media: Reject pending CDM promise during destruction.

media/base/cdm_callback_promise.h

Index: media/base/cdm_callback_promise.h
diff --git a/media/base/cdm_callback_promise.h b/media/base/cdm_callback_promise.h
index b271a79bb35d16e7c3e62591562f2e41f703bdf9..3ddc34043fcbe95cc0305b8f5771215460b831e7 100644
--- a/media/base/cdm_callback_promise.h
+++ b/media/base/cdm_callback_promise.h
@@ -36,7 +36,9 @@ class MEDIA_EXPORT CdmCallbackPromise : public CdmPromiseTemplate<T...> {
                       const std::string& error_message) override;
 
  private:
+  using CdmPromiseTemplate<T...>::IsPromiseSettled;
   using CdmPromiseTemplate<T...>::MarkPromiseSettled;
+  using CdmPromiseTemplate<T...>::RejectPromiseOnDestruction;
 
   base::Callback<void(const T&...)> resolve_cb_;
   PromiseRejectedCB reject_cb_;