Media Galleries Partial Deprecation: Remove scan functionality.

chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.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_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/gtest_prod_util.h"
@@ skipping 32 matching lines @@
   void OnAuxiliaryButtonClicked();
 
   // MediaGalleriesDialog implementation:
   void UpdateGalleries() override;
 
   // ConstrainedWindowMacDelegate implementation.
   void OnConstrainedWindowClosed(ConstrainedWindowMac* window) override;
 
   // MediaGalleryListEntryController implementation.
   void OnCheckboxToggled(MediaGalleryPrefId pref_id, bool checked) override;
-  void OnFolderViewerClicked(MediaGalleryPrefId prefId) override;
   ui::MenuModel* GetContextMenu(MediaGalleryPrefId pref_id) override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogBrowserTest, Close);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, InitializeCheckboxes);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, ToggleCheckboxes);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, UpdateAdds);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, ForgetDeletes);
 
   // MediaGalleriesDialog implementation:
@@ skipping 20 matching lines @@
   // Container view for the main dialog contents.
   base::scoped_nsobject<NSBox> main_container_;
 
   // An Objective-C class to route callbacks from Cocoa code.
   base::scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_