Get mojo_shell building inside chromium checkout.

mojo/services/native_viewport/platform_viewport_stub.cc

 // Copyright 2014 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 "view_manager/public/cpp/lib/view_private.h"
+#include "mojo/services/native_viewport/platform_viewport_headless.h"
 
 namespace mojo {
 
-ViewPrivate::ViewPrivate(View* view)
-    : view_(view) {
-  CHECK(view);
-}
-
-ViewPrivate::~ViewPrivate() {
-}
-
 // static
-View* ViewPrivate::LocalCreate() {
-  return new View;
+scoped_ptr<PlatformViewport> PlatformViewport::Create(Delegate* delegate) {
+  return PlatformViewportHeadless::Create(delegate);
 }
 
 }  // namespace mojo