Set a reasonable icon for the media galleries scan result dialog folder viewer.

chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc

Index: chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc
diff --git a/chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc b/chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc
index cf8c6ad8728f97683e07e0b4d3e8d8dded8f358e..46d2af6664a841ee4cc036fd688e87c407ca510b 100644
--- a/chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc
+++ b/chrome/browser/ui/views/extensions/media_galleries_scan_result_dialog_views.cc
@@ -10,6 +10,7 @@
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
+#include "grit/theme_resources.h"
 #include "grit/ui_resources.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -190,7 +191,9 @@ bool MediaGalleriesScanResultDialogViews::AddOrUpdateScanResult(
   views::ImageButton* folder_viewer_button = new views::ImageButton(this);
   folder_viewer_button->set_context_menu_controller(this);
   folder_viewer_button->SetImage(views::ImageButton::STATE_NORMAL,
-                                 rb.GetImageSkiaNamed(IDR_OAK));
+                                 rb.GetImageSkiaNamed(IDR_FILE_FOLDER));
+  folder_viewer_button->SetImageAlignment(views::ImageButton::ALIGN_CENTER,
+                                          views::ImageButton::ALIGN_MIDDLE);
   folder_viewer_button->SetAccessibleName(l10n_util::GetStringUTF16(
       IDS_MEDIA_GALLERIES_SCAN_RESULT_OPEN_FOLDER_VIEW_ACCESSIBILITY_NAME));
   folder_viewer_button->SetFocusable(true);