Mac: Draw download item background like windows does if a theme is installed.

chrome/browser/cocoa/download_item_cell.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_
 #define CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_
 
 #import "base/cocoa_protocols_mac.h"
 #import "chrome/browser/cocoa/gradient_button_cell.h"
 
 #include "base/file_path.h"
 
 class BaseDownloadItemModel;
+@class GTMTheme;
 
 // A button cell that implements the weird button/popup button hybrid that is
 // used by the download items.
 
 // The button represented by this cell consists of a button part on the left
 // and a dropdown-menu part on the right. This enum describes which part the
 // mouse cursor is over currently.
 enum DownloadItemMousePosition {
   kDownloadItemMouseOutside,
   kDownloadItemMouseOverButtonPart,
@@ skipping 11 matching lines @@
   FilePath downloadPath_;  // stored unelided
   NSString* secondaryTitle_;
   NSFont* secondaryFont_;
   int percentDone_;
   scoped_nsobject<NSAnimation> completionAnimation_;
 
   BOOL isStatusTextVisible_;
   CGFloat titleY_;
   CGFloat statusAlpha_;
   scoped_nsobject<NSAnimation> hideStatusAnimation_;
+
+  scoped_nsobject<GTMTheme> theme_;
 }
 
 - (void)setStateFromDownload:(BaseDownloadItemModel*)downloadModel;
 
 @property (copy) NSString* secondaryTitle;
 @property (retain) NSFont* secondaryFont;
 
 // Valid to call in response to a click of the cell's button. Returns if the
 // button part of the cell was clicked.
 - (BOOL)isButtonPartPressed;
 
 @end
 
 #endif  // CHROME_BROWSER_COCOA_DOWNLOAD_ITEM_CELL_H_