[Mac] DownloadShelf should be notified when autoclosing.

chrome/browser/download/download_shelf.h

Index: chrome/browser/download/download_shelf.h
diff --git a/chrome/browser/download/download_shelf.h b/chrome/browser/download/download_shelf.h
index 9bf0ab476476749369c222602fcd8e02685852a5..748ae4fa5dd86a2e2defe59becb9228909bc3de5 100644
--- a/chrome/browser/download/download_shelf.h
+++ b/chrome/browser/download/download_shelf.h
@@ -19,6 +19,11 @@ class Browser;
 // implementations.
 class DownloadShelf {
  public:
+  enum CloseReason {
+    AUTOMATIC,

[Nico, 2013/03/22 20:24:11]

Maybe you can add a comment that explains when AUTOMATIC is used.

[asanka, 2013/03/22 21:22:13]

Done.

+    USER_ACTION
+  };
+
   DownloadShelf();
   virtual ~DownloadShelf();
 
@@ -44,7 +49,7 @@ class DownloadShelf {
   void Show();
 
   // Closes the shelf.
-  void Close();
+  void Close(CloseReason reason);
 
   // Hides the shelf. This closes the shelf if it is currently showing.
   void Hide();
@@ -61,7 +66,7 @@ class DownloadShelf {
  protected:
   virtual void DoAddDownload(content::DownloadItem* download) = 0;
   virtual void DoShow() = 0;
-  virtual void DoClose() = 0;
+  virtual void DoClose(CloseReason reason) = 0;
 
   // Time delay to wait before adding a transient download to the shelf.
   // Protected virtual for testing.