Reland DownloadItem::Observer::OnDownloadDestroyed() replaces DownloadItem::REMOVING

content/browser/download/save_package.cc

Index: content/browser/download/save_package.cc
diff --git a/content/browser/download/save_package.cc b/content/browser/download/save_package.cc
index d1386029376c9c2e1193d0df6ead935a13959e5b..e6a47bc2fd57c2294a1813ab1af254be26053f7b 100644
--- a/content/browser/download/save_package.cc
+++ b/content/browser/download/save_package.cc
@@ -1357,15 +1357,8 @@ void SavePackage::StopObservation() {
   download_manager_ = NULL;
 }
 
-void SavePackage::OnDownloadUpdated(DownloadItem* download) {
-  DCHECK(download_);
-  DCHECK(download_ == download);
-  DCHECK(download_manager_);
-
-  // Check for removal.
-  if (download_->GetState() == DownloadItem::REMOVING) {
-    StopObservation();
-  }
+void SavePackage::OnDownloadDestroyed(DownloadItem* download) {
+  StopObservation();
 }
 
 void SavePackage::FinalizeDownloadEntry() {