First round of dead file removal

experimental/flocking_geese/nacl_app/scoped_pixel_lock.h

-// Copyright (c) 2011 The Native Client Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SCOPED_PIXEL_LOCK_H_
-#define SCOPED_PIXEL_LOCK_H_
-
-#include <tr1/memory>
-#include "nacl_app/locking_image_data.h"
-
-namespace flocking_geese {
-
-// A small helper RAII class used to acquire and release the pixel lock based
-// on C++ scoping rules.
-class ScopedPixelLock {
- public:
-  explicit ScopedPixelLock(
-      const std::tr1::shared_ptr<LockingImageData>& pixel_owner)
-      : pixel_owner_(pixel_owner) {
-    pixels_ = pixel_owner_ == NULL ? NULL : pixel_owner->LockPixels();
-  }
-
-  ~ScopedPixelLock() {
-    pixels_ = NULL;
-    if (pixel_owner_ != NULL)
-      pixel_owner_->UnlockPixels();
-  }
-
-  bool is_valid() const {
-    return pixels_ != NULL;
-  }
-
-  uint32_t* pixels() const {
-    return pixels_;
-  }
-
- private:
-  std::tr1::shared_ptr<LockingImageData> pixel_owner_;
-  uint32_t* pixels_;  // Weak reference.
-};
-}  // namespace flocking_geese
-
-#endif  // SCOPED_PIXEL_LOCK_H_
-