Wholesale move sky/engine/tonic to tonic

tonic/dart_api_scope.h

+// Copyright 2015 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_TONIC_DART_API_SCOPE_H_
+#define SKY_ENGINE_TONIC_DART_API_SCOPE_H_
+
+#include "base/macros.h"
+#include "dart/runtime/include/dart_api.h"
+
+namespace blink {
+
+class DartApiScope {
+ public:
+  DartApiScope() { Dart_EnterScope(); }
+  ~DartApiScope() { Dart_ExitScope(); }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(DartApiScope);
+};
+
+}  // namespace blink
+
+#endif  // SKY_ENGINE_TONIC_DART_API_SCOPE_H_