Make all text buttons on download shelf work well with themes, not just the "show all" button.

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 <stddef.h>
 
 #include <vector>
@@ skipping 73 matching lines @@
   bool IsClosing() const override;
   Browser* browser() const override;
 
   // Implementation of MouseWatcherListener override.
   void MouseMovedOutOfHost() override;
 
   // Removes a specified download view. The supplied view is deleted after
   // it's removed.
   void RemoveDownloadView(views::View* view);
 
+  // Updates |button| according to the active theme.
+  void ConfigureButtonForTheme(views::MdTextButton* button);
+
  protected:
   // Implementation of DownloadShelf.
   void DoAddDownload(content::DownloadItem* download) override;
   void DoShow() override;
   void DoClose(CloseReason reason) override;
 
   // From AccessiblePaneView
   views::View* GetDefaultFocusableChild() override;
 
  private:
@@ skipping 46 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_