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

sky/engine/bindings-dart/core/dart/DartCallback.cpp

Index: sky/engine/bindings-dart/core/dart/DartCallback.cpp
diff --git a/sky/engine/bindings/core/v8/custom/V8ErrorEventCustom.cpp b/sky/engine/bindings-dart/core/dart/DartCallback.cpp
similarity index 55%
copy from sky/engine/bindings/core/v8/custom/V8ErrorEventCustom.cpp
copy to sky/engine/bindings-dart/core/dart/DartCallback.cpp
index c68f1661132acfcdb0c42fdfc25eb527d832c1f4..ef8058a26c401fa5756abad21b402c01f6c40d66 100644
--- a/sky/engine/bindings/core/v8/custom/V8ErrorEventCustom.cpp
+++ b/sky/engine/bindings-dart/core/dart/DartCallback.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Google Inc. All rights reserved.
+ * Copyright (C) 2006-2011 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
@@ -28,29 +28,49 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "sky/engine/config.h"
-#include "bindings/core/v8/V8ErrorEvent.h"
+#include "config.h"
+#include "bindings/core/dart/DartCallback.h"
 
-#include "bindings/core/v8/V8Event.h"
-#include "gen/sky/platform/RuntimeEnabledFeatures.h"
-#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
-#include "sky/engine/bindings/core/v8/Dictionary.h"
-#include "sky/engine/bindings/core/v8/SerializedScriptValue.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8DOMWrapper.h"
-#include "sky/engine/bindings/core/v8/V8HiddenValue.h"
+#include "bindings/core/dart/DartController.h"
+#include "bindings/core/dart/DartDOMData.h"
+#include "bindings/core/dart/DartUtilities.h"
 
 namespace blink {
 
-void V8ErrorEvent::errorAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
+DartCallback::DartCallback(Dart_Handle object, Dart_Handle& exception)
 {
-    v8::Handle<v8::Value> error = V8HiddenValue::getHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::error(info.GetIsolate()));
-    if (!error.IsEmpty()) {
-        v8SetReturnValue(info, error);
+    if (!Dart_IsClosure(object)) {
+        exception = Dart_NewStringFromCString("Callback must be a function");
+        m_callback = 0;
         return;
     }
+    m_callback = Dart_NewPersistentHandle(object);
+}
+
+DartCallback::~DartCallback()
+{
+    if (!m_callback || !isIsolateAlive())
+        return;
+
+    DartIsolateScope scope(isolate());
+    Dart_DeletePersistentHandle(m_callback);
+}
 
-    v8SetReturnValueNull(info);
+bool DartCallback::handleEvent(int argc, Dart_Handle* argv)
+{
+    ASSERT(isolate() == Dart_CurrentIsolate());
+    ASSERT(m_callback);
+
+    ExecutionContext* context = DartDOMData::current()->scriptExecutionContext();
+    DartController* dartController = DartController::retrieve(context);
+
+    Dart_Handle result = dartController->callFunction(Dart_HandleFromPersistent(m_callback), argc, argv);
+    if (Dart_IsError(result)) {
+        DartUtilities::reportProblem(context, result);
+        return false;
+    }
+
+    return true;
 }
 
-} // namespace blink
+}