Makes Ctrl-Shift-L work in AppList

ash/test/test_shell_delegate.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 "ash/test/test_shell_delegate.h"
 
 #include <algorithm>
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 12 matching lines @@
 void TestShellDelegate::CreateNewWindow() {
 }
 
 views::Widget* TestShellDelegate::CreateStatusArea() {
   return NULL;
 }
 
 void TestShellDelegate::BuildAppListModel(AppListModel* model) {
 }
 
+#if defined(OS_CHROMEOS)
+void TestShellDelegate::LockScreen() {
+}
+#endif
+
 AppListViewDelegate* TestShellDelegate::CreateAppListViewDelegate() {
   return NULL;
 }
 
 std::vector<aura::Window*> TestShellDelegate::GetCycleWindowList(
     CycleSource source,
     CycleOrder order) const {
   // We just use the Shell's default container of windows, so tests can be
   // written with the usual CreateTestWindowWithId() calls. But window cycling
   // expects the topmost window at the front of the list, so reverse the order.
@@ skipping 10 matching lines @@
 bool TestShellDelegate::ConfigureLauncherItem(LauncherItem* item) {
   return true;
 }
 
 int TestShellDelegate::GetBrowserShortcutResourceId() {
   return IDR_AURA_LAUNCHER_BROWSER_SHORTCUT;
 }
 
 }  // namespace test
 }  // namespace ash