Makes the download shelf auto-close after the user opens all downloads

chrome/browser/views/download_shelf_view.h

Index: chrome/browser/views/download_shelf_view.h
diff --git a/chrome/browser/views/download_shelf_view.h b/chrome/browser/views/download_shelf_view.h
index 83fab7c8a1963c5ddf19309a864d2ed48e78c3e9..db7e53e062ba517106e66e29a611e5086503db00 100644
--- a/chrome/browser/views/download_shelf_view.h
+++ b/chrome/browser/views/download_shelf_view.h
@@ -10,6 +10,7 @@
 #include "chrome/browser/download/download_shelf.h"
 #include "views/controls/button/button.h"
 #include "views/controls/link.h"
+#include "views/mouse_watcher.h"
 
 namespace views {
 class ImageButton;
@@ -28,15 +29,19 @@ class DownloadItemView;
 //
 // DownloadShelfView does not hold an infinite number of download views, rather
 // it'll automatically remove views once a certain point is reached.
-class DownloadShelfView : public DownloadShelf,
-                          public views::View,
+class DownloadShelfView : public AnimationDelegate,
+                          public DownloadShelf,
                           public views::ButtonListener,
                           public views::LinkController,
-                          public AnimationDelegate {
+                          public views::MouseWatcherListener,
+                          public views::View {
  public:
   DownloadShelfView(Browser* browser, BrowserView* parent);
   virtual ~DownloadShelfView();
 
+  // Sent from the DownloadItemView when the user opens an item.
+  void OpenedDownload(DownloadItemView* view);
+
   // Implementation of View.
   virtual gfx::Size GetPreferredSize();
   virtual void Layout();
@@ -63,6 +68,9 @@ class DownloadShelfView : public DownloadShelf,
   virtual void Close();
   virtual Browser* browser() const { return browser_; }
 
+  // Implementation of MouseWatcherDelegate.
+  virtual void MouseMovedOutOfView();
+
   // Removes a specified download view. The supplied view is deleted after
   // it's removed.
   void RemoveDownloadView(views::View* view);
@@ -90,6 +98,10 @@ class DownloadShelfView : public DownloadShelf,
   // Called when the "close shelf" animation ended.
   void Closed();
 
+  // Returns true if we can auto close. We can auto-close if all the items on
+  // the shelf have been opened.
+  bool CanAutoClose();
+
   // The browser for this shelf.
   Browser* browser_;
 
@@ -117,6 +129,8 @@ class DownloadShelfView : public DownloadShelf,
   // The window this shelf belongs to.
   BrowserView* parent_;
 
+  views::MouseWatcher mouse_watcher_;
+
   DISALLOW_COPY_AND_ASSIGN(DownloadShelfView);
 };