Rename an Enum to a slightly better name.

components/offline_pages/downloads/download_notifying_observer.h

Index: components/offline_pages/downloads/download_notifying_observer.h
diff --git a/components/offline_pages/downloads/download_notifying_observer.h b/components/offline_pages/downloads/download_notifying_observer.h
index f090492081406a7ae52a3e54d57f7d3eee8878d0..44f1e1f617c4991966e645a312359920cf7fbb3f 100644
--- a/components/offline_pages/downloads/download_notifying_observer.h
+++ b/components/offline_pages/downloads/download_notifying_observer.h
@@ -31,8 +31,9 @@ class DownloadNotifyingObserver : public RequestCoordinator::Observer,
   // RequestCoordinator::Observer implementation:
   void OnAdded(const SavePageRequest& request) override;
   void OnChanged(const SavePageRequest& request) override;
-  void OnCompleted(const SavePageRequest& request,
-                   RequestCoordinator::SavePageStatus status) override;
+  void OnCompleted(
+      const SavePageRequest& request,
+      RequestCoordinator::BackgroundSavePageResult status) override;
 
  private:
   friend class DownloadNotifyingObserverTest;