Enable Search-key modifiers for extended key shortcuts.

ash/shell/shell_delegate_impl.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/shell/shell_delegate_impl.h"
 
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/launcher_delegate_impl.h"
@@ skipping 192 matching lines @@
 }
 
 ui::MenuModel* ShellDelegateImpl::CreateContextMenu(aura::RootWindow* root) {
   return new ContextMenu(root);
 }
 
 aura::client::StackingClient* ShellDelegateImpl::CreateStackingClient() {
   return new StackingController;
 }
 
-bool ShellDelegateImpl::IsSearchKeyActingAsFunctionKey() const {
-  return false;
-}
-
 RootWindowHostFactory* ShellDelegateImpl::CreateRootWindowHostFactory() {
   return RootWindowHostFactory::Create();
 }
 
 }  // namespace shell
 }  // namespace ash