Rename sky/engine/bindings2 to sky/engine/bindings

sky/engine/bindings2/builtin_sky.h

-// 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.
-
-#ifndef SKY_ENGINE_BINDINGS2_BUILTIN_SKY_H_
-#define SKY_ENGINE_BINDINGS2_BUILTIN_SKY_H_
-
-#include "base/macros.h"
-#include "dart/runtime/include/dart_api.h"
-#include "sky/engine/tonic/dart_class_provider.h"
-#include "sky/engine/tonic/dart_persistent_value.h"
-
-namespace blink {
-class DOMDartState;
-
-class BuiltinSky : public DartClassProvider {
- public:
-  explicit BuiltinSky(DOMDartState* dart_state);
-  ~BuiltinSky();
-
-  void InstallWindow(DOMDartState* dart_state);
-
-  // DartClassProvider:
-  Dart_Handle GetClassByName(const char* class_name) override;
-
- private:
-  DartPersistentValue library_;
-
-  DISALLOW_COPY_AND_ASSIGN(BuiltinSky);
-};
-
-}  // namespace blink
-
-#endif  // SKY_ENGINE_BINDINGS2_BUILTIN_SKY_H_