Mac: Add tooltip to download item.

chrome/browser/cocoa/download_item_controller.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 
 class BaseDownloadItemModel;
 @class ChromeUILocalizer;
@@ skipping 67 matching lines @@
 
 // Download item button clicked
 - (IBAction)handleButtonClick:(id)sender;
 
 // Returns the size this item wants to have.
 - (NSSize)preferredSize;
 
 // Returns the DownloadItem model object belonging to this item.
 - (DownloadItem*)download;
 
+// Updates the tooltip with the download's path.
+- (void)updateToolTip;
+
 // Handling of dangerous downloads
 - (void)clearDangerousMode;
 - (BOOL)isDangerousMode;
 - (IBAction)saveDownload:(id)sender;
 - (IBAction)discardDownload:(id)sender;
 
 // Context menu handlers.
 - (IBAction)handleOpen:(id)sender;
 - (IBAction)handleAlwaysOpen:(id)sender;
 - (IBAction)handleReveal:(id)sender;
 - (IBAction)handleCancel:(id)sender;
 - (IBAction)handleTogglePause:(id)sender;
 
 @end