Remove "All files" filter from the wallpaper image picker

chrome/browser/ui/webui/options2/chromeos/set_wallpaper_options_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/options2/chromeos/set_wallpaper_options_handler.h"
 
 #include "ash/desktop_background/desktop_background_controller.h"
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 26 matching lines @@
   file_type_info.extensions.resize(1);
 
   file_type_info.extensions[0].push_back(FILE_PATH_LITERAL("jpg"));
   file_type_info.extensions[0].push_back(FILE_PATH_LITERAL("jpeg"));
   file_type_info.extensions[0].push_back(FILE_PATH_LITERAL("png"));
 
   file_type_info.extension_description_overrides.resize(1);
   file_type_info.extension_description_overrides[0] =
       l10n_util::GetStringUTF16(IDS_IMAGE_FILES);
 
-  file_type_info.include_all_files = true;
-
   return file_type_info;
 }
 
 }  // namespace
 
 SetWallpaperOptionsHandler::SetWallpaperOptionsHandler()
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)) {
 }
 
 SetWallpaperOptionsHandler::~SetWallpaperOptionsHandler() {
@@ skipping 194 matching lines @@
 }
 
 gfx::NativeWindow SetWallpaperOptionsHandler::GetBrowserWindow() const {
   Browser* browser =
       browser::FindBrowserWithWebContents(web_ui()->GetWebContents());
   return browser->window()->GetNativeWindow();
 }
 
 }  // namespace options2
 }  // namespace chromeos