WIP bindings: Add support for the record<K,V> WebIDL type.

third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h

Index: third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h b/third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h
index a479be908031d749df4ee0bc17ddcf832774c750..1751e880b3a17edf550de6e0c8bc4f3a0f49c412 100644
--- a/third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h
+++ b/third_party/WebKit/Source/bindings/tests/results/core/LongOrTestDictionary.h
@@ -14,6 +14,7 @@
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/NativeValueTraits.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8TestDictionary.h"
 #include "core/CoreExport.h"
@@ -75,9 +76,15 @@ inline void v8SetReturnValue(const CallbackInfo& callbackInfo, LongOrTestDiction
 
 template <>
 struct NativeValueTraits<LongOrTestDictionary> {
+  using ImplType = LongOrTestDictionary;
   CORE_EXPORT static LongOrTestDictionary nativeValue(v8::Isolate*, v8::Local<v8::Value>, ExceptionState&);
 };
 
+template <>
+struct V8TypeOf<LongOrTestDictionary> {
+  typedef V8LongOrTestDictionary Type;
+};
+
 }  // namespace blink
 
 // We need to set canInitializeWithMemset=true because HeapVector supports