MD Extensions: Show messages for no extensions, and for no search results

chrome/browser/ui/webui/extensions/extensions_ui.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/extensions/extensions_ui.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 97 matching lines @@
 
   source->AddLocalizedString("title",
                              IDS_MANAGE_EXTENSIONS_SETTING_WINDOWS_TITLE);
   source->AddLocalizedString("toolbarTitle", IDS_MD_EXTENSIONS_TOOLBAR_TITLE);
   source->AddLocalizedString("search", IDS_MD_EXTENSIONS_SEARCH);
   // TODO(dpapad): Use a single merged string resource for "Clear search".
   source->AddLocalizedString("clearSearch", IDS_DOWNLOAD_CLEAR_SEARCH);
   source->AddLocalizedString("sidebarApps", IDS_MD_EXTENSIONS_SIDEBAR_APPS);
   source->AddLocalizedString("sidebarExtensions",
                              IDS_MD_EXTENSIONS_SIDEBAR_EXTENSIONS);
+  source->AddLocalizedString("noExtensionsOrApps",
+                             IDS_MD_EXTENSIONS_NO_INSTALLED_ITEMS);
+  source->AddLocalizedString("noSearchResults",
+                             IDS_MD_EXTENSIONS_NO_SEARCH_RESULTS);
   source->AddLocalizedString("dropToInstall",
                              IDS_EXTENSIONS_INSTALL_DROP_TARGET);
   source->AddLocalizedString("errorsPageHeading",
                              IDS_MD_EXTENSIONS_ERROR_PAGE_HEADING);
   source->AddLocalizedString("getMoreExtensions",
                              IDS_MD_EXTENSIONS_SIDEBAR_GET_MORE_EXTENSIONS);
   source->AddLocalizedString("keyboardShortcuts",
                              IDS_MD_EXTENSIONS_SIDEBAR_KEYBOARD_SHORTCUTS);
   source->AddLocalizedString("itemId", IDS_MD_EXTENSIONS_ITEM_ID);
   source->AddLocalizedString("itemInspectViews",
@@ skipping 256 matching lines @@
 ExtensionsUI::~ExtensionsUI() {}
 
 // static
 base::RefCountedMemory* ExtensionsUI::GetFaviconResourceBytes(
     ui::ScaleFactor scale_factor) {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   return rb.LoadDataResourceBytesForScale(IDR_EXTENSIONS_FAVICON, scale_factor);
 }
 
 }  // namespace extensions