Move download shelf from per-tab to per-window

chrome/browser/cocoa/browser_window_cocoa.h

Index: chrome/browser/cocoa/browser_window_cocoa.h
===================================================================
--- chrome/browser/cocoa/browser_window_cocoa.h	(revision 17483)
+++ chrome/browser/cocoa/browser_window_cocoa.h	(working copy)
@@ -57,6 +57,8 @@
   virtual void ShowAboutChromeDialog();
   virtual void ShowBookmarkManager();
   virtual void ShowBookmarkBubble(const GURL& url, bool already_bookmarked);
+  virtual bool IsDownloadShelfVisible() const;
+  virtual DownloadShelf* GetDownloadShelf();
   virtual void ShowReportBugDialog();
   virtual void ShowClearBrowsingDataDialog();
   virtual void ShowImportDialog();
@@ -86,6 +88,12 @@
   NSWindow* window_;  // weak, owned by controller
   Browser* browser_;  // weak, owned by controller
   BrowserWindowController* controller_;  // weak, owns us
+
+  // Data for shelves and stuff ------------------------------------------------
+  // FIXME(thakis): This should probably in the controller on OS X.
+
+  // The download shelf view (view at the bottom of the page).
+  scoped_ptr<DownloadShelf> download_shelf_;
 };
 
 #endif  // CHROME_BROWSER_COCOA_BROWSER_WINDOW_COCOA_H_