IDL: Auto-generate NativeValueTraits for IDL dictionaries

Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h

Index: Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h
diff --git a/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h b/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h
index e58ff81655e149a099b9d9562bc0fe5b207ffe26..ca10276a31b1f2302ac25eada5ef3a0ad7cbecda 100644
--- a/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h
+++ b/Source/modules/encryptedmedia/NavigatorRequestMediaKeySystemAccess.h
@@ -45,18 +45,6 @@ private:
     static const char* supplementName();
 };
 
-// This is needed by the generated code for Navigator to convert a JavaScript
-// object into a MediaKeySystemOptions object.
-template <>
-struct NativeValueTraits<MediaKeySystemOptions> {
-    static inline MediaKeySystemOptions nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
-    {
-        MediaKeySystemOptions impl;
-        V8MediaKeySystemOptions::toImpl(isolate, value, impl, exceptionState);
-        return impl;
-    }
-};
-
 } // namespace blink
 
 #endif // NavigatorRequestMediaKeySystemAccess_h