Reland a portion of r215672.

gpu/demos/gles2_book/demo_stencil_test.cc

-// Copyright (c) 2010 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.
-
-// This example shows various stencil buffer operations.
-
-#include "gpu/demos/framework/demo_factory.h"
-#include "gpu/demos/gles2_book/example.h"
-#include "third_party/gles2_book/Chapter_11/Stencil_Test/Stencil_Test.h"
-
-namespace gpu {
-namespace demos {
-
-namespace gles2_book {
-class StencilTest : public Example<STUserData> {
- public:
-  StencilTest() {
-    RegisterCallbacks(stInit, NULL, stDraw, stShutDown);
-  }
-
-  const wchar_t* Title() const {
-    return L"Stencil Test";
-  }
-};
-}  // namespace gles2_book
-
-Demo* CreateDemo() {
-  return new gles2_book::StencilTest();
-}
-
-}  // namespace demos
-}  // namespace gpu