Revert 149794 - DownloadItem::Observer::OnDownloadDestroyed() replaces DownloadItem::REMOVING

chrome/browser/ui/gtk/download/download_item_gtk.cc

Index: chrome/browser/ui/gtk/download/download_item_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/download/download_item_gtk.cc	(revision 150095)
+++ chrome/browser/ui/gtk/download/download_item_gtk.cc	(working copy)
@@ -326,6 +326,9 @@
   }
 
   switch (download->GetState()) {
+    case DownloadItem::REMOVING:
+      parent_shelf_->RemoveDownloadItem(this);  // This will delete us!
+      return;
     case DownloadItem::CANCELLED:
       StopDownloadProgress();
       gtk_widget_queue_draw(progress_area_.get());
@@ -369,11 +372,6 @@
   UpdateStatusLabel(status_text_);
 }
 
-void DownloadItemGtk::OnDownloadDestroyed(DownloadItem* download) {
-  parent_shelf_->RemoveDownloadItem(this);
-  // This will delete us!
-}
-
 void DownloadItemGtk::AnimationProgressed(const ui::Animation* animation) {
   if (animation == &complete_animation_) {
     gtk_widget_queue_draw(progress_area_.get());