media: Reject pending CDM promise during destruction.

content/browser/media/cdm/browser_cdm_manager.cc

Index: content/browser/media/cdm/browser_cdm_manager.cc
diff --git a/content/browser/media/cdm/browser_cdm_manager.cc b/content/browser/media/cdm/browser_cdm_manager.cc
index c83bdd213149ab4b97240dc79543f21629afbd28..db94775d626ff91874e1646bd675b03c546d4766 100644
--- a/content/browser/media/cdm/browser_cdm_manager.cc
+++ b/content/browser/media/cdm/browser_cdm_manager.cc
@@ -72,7 +72,10 @@ class CdmPromiseInternal : public media::CdmPromiseTemplate<T...> {
     DCHECK(manager_);
   }
 
-  ~CdmPromiseInternal() final {}
+  ~CdmPromiseInternal() final {
+    if (!IsPromiseSettled())
+      RejectPromiseOnDestruction();
+  }
 
   // CdmPromiseTemplate<> implementation.
   void resolve(const T&... result) final;
@@ -88,7 +91,9 @@ class CdmPromiseInternal : public media::CdmPromiseTemplate<T...> {
   }
 
  private:
+  using media::CdmPromiseTemplate<T...>::IsPromiseSettled;
   using media::CdmPromiseTemplate<T...>::MarkPromiseSettled;
+  using media::CdmPromiseTemplate<T...>::RejectPromiseOnDestruction;
 
   base::WeakPtr<BrowserCdmManager> const manager_;
   const int render_frame_id_;