Add DartController and friends

sky/engine/core/script/dart_controller.h

Index: sky/engine/core/script/dart_controller.h
diff --git a/sky/engine/core/script/dart_controller.h b/sky/engine/core/script/dart_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..0da2a3dd2a4ee3a6430f659f584503f023be3f86
--- /dev/null
+++ b/sky/engine/core/script/dart_controller.h
@@ -0,0 +1,49 @@
+// 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_CORE_SCRIPT_DART_CONTROLLER_H_
+#define SKY_ENGINE_CORE_SCRIPT_DART_CONTROLLER_H_
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "dart/runtime/include/dart_api.h"
+#include "sky/engine/wtf/OwnPtr.h"
+#include "sky/engine/wtf/text/AtomicString.h"
+#include "sky/engine/wtf/text/TextPosition.h"
+
+namespace blink {
+class AbstractModule;
+class BuiltinSky;
+class DOMDartState;
+class Document;
+
+class DartController {
+ public:
+  DartController();
+  ~DartController();
+
+  static void InitVM();
+
+  void LoadModule(RefPtr<AbstractModule> module,
+                  const String& source,
+                  const TextPosition& textPosition);
+  void ClearForClose();
+  void CreateIsolateFor(Document*);
+
+  DOMDartState* dart_state() const { return dom_dart_state_.get(); }
+
+ private:
+  void ExecuteModule(RefPtr<AbstractModule> module);
+
+  OwnPtr<DOMDartState> dom_dart_state_;
+  OwnPtr<BuiltinSky> builtin_sky_;
+
+  base::WeakPtrFactory<DartController> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(DartController);
+};
+
+}
+
+#endif // SKY_ENGINE_CORE_SCRIPT_DART_CONTROLLER_H_