[MD] Share button code between find bar and download shelf

chrome/browser/ui/views/download/download_shelf_view.h

 // Copyright (c) 2012 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_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 106 matching lines @@
   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();
 
   // Gets the |DownloadItem| for the i^th download view. TODO(estade): this
   // shouldn't be necessary after we only have one type of DownloadItemView.
   content::DownloadItem* GetDownloadItemForView(size_t i);
 
+  // Returns the color of text for the shelf (used for deriving icon color).
+  SkColor GetTextColorForIconMd();
+
   // The browser for this shelf.
   Browser* browser_;
 
   // The animation for adding new items to the shelf.
   gfx::SlideAnimation new_item_animation_;
 
   // The show/hide animation for the shelf itself.
   gfx::SlideAnimation shelf_animation_;
 
   // The download views. These are also child Views, and deleted when
@@ skipping 13 matching lines @@
 
   // The window this shelf belongs to.
   BrowserView* parent_;
 
   views::MouseWatcher mouse_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadShelfView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_