Make NFC.cpp use JSON::Stringify

third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h

Index: third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h b/third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h
index f807cb10b87ef12c45bafbac3ef0971bb879c70e..b288888ad7586e795252dc6012c67b5fff53e264 100644
--- a/third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h
+++ b/third_party/WebKit/Source/bindings/core/v8/JSONValuesForV8.h
@@ -15,11 +15,6 @@ namespace blink {
 class ExceptionState;
 class ScriptState;
 
-CORE_EXPORT std::unique_ptr<JSONValue> toJSONValue(
-    v8::Local<v8::Context>,
-    v8::Local<v8::Value>,
-    int maxDepth = JSONValue::maxDepth);
-
 CORE_EXPORT v8::Local<v8::Value> fromJSONString(ScriptState*,
                                                 const String& stringifiedJSON,
                                                 ExceptionState&);