Implement DataCue interface.

Source/bindings/v8/custom/V8TextTrackCueCustom.cpp

Index: Source/bindings/v8/custom/V8TextTrackCueCustom.cpp
diff --git a/Source/bindings/v8/custom/V8TextTrackCueCustom.cpp b/Source/bindings/v8/custom/V8TextTrackCueCustom.cpp
index 8d078eb91e96aa0dff57cee35fef60183d36e0a6..f6e59fe3774a64545db5d4bad634a3cc1e5d7f1b 100644
--- a/Source/bindings/v8/custom/V8TextTrackCueCustom.cpp
+++ b/Source/bindings/v8/custom/V8TextTrackCueCustom.cpp
@@ -30,13 +30,22 @@
 #include "config.h"
 #include "bindings/core/v8/V8TextTrackCue.h"
 
+#include "bindings/core/v8/V8DataCue.h"
 #include "bindings/core/v8/V8VTTCue.h"
 
 namespace WebCore {
 
 v8::Handle<v8::Value> toV8(TextTrackCue* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
-    return toV8(toVTTCue(impl), creationContext, isolate);
+    switch (impl->cueType()) {
+    case TextTrackCue::Data:
+        return toV8(toDataCue(impl), creationContext, isolate);
+    case TextTrackCue::WebVTT:
+        return toV8(toVTTCue(impl), creationContext, isolate);
+    default:
+        ASSERT_NOT_REACHED();
+        return v8::Handle<v8::Value>();
+    }
 }
 
 } // namespace WebCore