Add persisted preference for projection touch HUD

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 <limits>
 
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/host/root_window_host_factory.h"
@@ skipping 202 matching lines @@
 }
 
 RootWindowHostFactory* TestShellDelegate::CreateRootWindowHostFactory() {
   return RootWindowHostFactory::Create();
 }
 
 base::string16 TestShellDelegate::GetProductName() const {
   return base::string16();
 }
 
+bool TestShellDelegate::IsTouchHudProjectionEnabled() const {
+  return false;
+}
+
+void TestShellDelegate::ToggleTouchHudProjection() {
+}
+
 TestSessionStateDelegate* TestShellDelegate::test_session_state_delegate() {
   return test_session_state_delegate_;
 }
 
 }  // namespace test
 }  // namespace ash