downloads: clicking "remove" on chrome://downloads should also hide shelf item.

chrome/browser/ui/webui/downloads_dom_handler.h

Index: chrome/browser/ui/webui/downloads_dom_handler.h
diff --git a/chrome/browser/ui/webui/downloads_dom_handler.h b/chrome/browser/ui/webui/downloads_dom_handler.h
index 06890acdcb06079d2493cc3b2056eb980b560c7a..85fdbd8a792d3514b631a9988c94df9690134c81 100644
--- a/chrome/browser/ui/webui/downloads_dom_handler.h
+++ b/chrome/browser/ui/webui/downloads_dom_handler.h
@@ -106,6 +106,9 @@ class DownloadsDOMHandler : public content::WebUIMessageHandler,
   // Protected for testing.
   virtual content::DownloadManager* GetMainNotifierManager();
 
+  // Actually remove downloads with an ID in |removals_|. This cannot be undone.
+  void FinalizeRemovals();
+
  private:
   // Shorthand for |observing_items_|, which tracks all items that this is
   // observing so that RemoveObserver will be called for all of them.
@@ -150,7 +153,7 @@ class DownloadsDOMHandler : public content::WebUIMessageHandler,
   scoped_ptr<AllDownloadItemNotifier> original_notifier_;
 
   // IDs of downloads to remove when this handler gets deleted.
-  std::vector<std::set<uint32>> removes_;
+  std::vector<std::set<uint32>> removals_;
 
   // Whether a call to SendCurrentDownloads() is currently scheduled.
   bool update_scheduled_;