Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/core/dart/ThreadSafeDartIsolateWrapper.h

Index: sky/engine/bindings-dart/core/dart/ThreadSafeDartIsolateWrapper.h
diff --git a/LICENSE b/sky/engine/bindings-dart/core/dart/ThreadSafeDartIsolateWrapper.h
similarity index 69%
copy from LICENSE
copy to sky/engine/bindings-dart/core/dart/ThreadSafeDartIsolateWrapper.h
index 972bb2edb099e58b6a1939fa57f8e74391159c0c..5ddc65fb55f18841a4b48b3a66d3106d280adba3 100644
--- a/LICENSE
+++ b/sky/engine/bindings-dart/core/dart/ThreadSafeDartIsolateWrapper.h
@@ -1,4 +1,5 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2012, Google Inc.
+// All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -25,3 +26,27 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef ThreadSafeDartIsolateWrapper_h
+#define ThreadSafeDartIsolateWrapper_h
+
+#include "bindings/core/dart/DartIsolateDestructionObserver.h"
+
+#include <dart_api.h>
+#include <wtf/RefPtr.h>
+#include <wtf/ThreadSafeRefCounted.h>
+
+namespace blink {
+
+class ThreadSafeDartIsolateWrapper : public ThreadSafeRefCounted<ThreadSafeDartIsolateWrapper>, public DartIsolateDestructionObserver {
+    WTF_MAKE_NONCOPYABLE(ThreadSafeDartIsolateWrapper);
+public:
+    static PassRefPtr<ThreadSafeDartIsolateWrapper> create();
+
+private:
+    ThreadSafeDartIsolateWrapper() { }
+};
+
+}
+
+#endif // ThreadSafeDartIsolateWrapper_h