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

sky/engine/bindings-dart/core/dart/custom/DartMutationObserverCustom.cpp

Index: sky/engine/bindings-dart/core/dart/custom/DartMutationObserverCustom.cpp
diff --git a/LICENSE b/sky/engine/bindings-dart/core/dart/custom/DartMutationObserverCustom.cpp
similarity index 58%
copy from LICENSE
copy to sky/engine/bindings-dart/core/dart/custom/DartMutationObserverCustom.cpp
index 972bb2edb099e58b6a1939fa57f8e74391159c0c..818772009d293300f67765a98e925c670251061c 100644
--- a/LICENSE
+++ b/sky/engine/bindings-dart/core/dart/custom/DartMutationObserverCustom.cpp
@@ -1,4 +1,5 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2011, 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 +26,44 @@
 // 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.
+
+#include "config.h"
+
+#include "bindings/core/dart/DartMutationObserver.h"
+
+#include "bindings/core/dart/DartMutationCallback.h"
+
+namespace blink {
+
+namespace DartMutationObserverInternal {
+
+void constructorCallback(Dart_NativeArguments args)
+{
+    Dart_Handle exception = 0;
+    {
+        Dart_Handle dartCallback = Dart_GetNativeArgument(args, 0);
+        if (!Dart_IsClosure(dartCallback)) {
+            DartExceptionState es;
+            es.throwDOMException(TypeMismatchError);
+            exception = es.toDart(args);
+            goto fail;
+        }
+
+        OwnPtr<MutationCallback> callback = DartMutationCallback::create(dartCallback, DartUtilities::scriptExecutionContext(), exception);
+        if (exception)
+            goto fail;
+
+        RefPtr<MutationObserver> observer = MutationObserver::create(callback.release());
+
+        DartDOMWrapper::returnToDart<DartMutationObserver>(args, observer.get());
+        return;
+    }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
+}
+
+}
+
+}