IDL: Add support for serializer definitions

Source/bindings/tests/results/core/V8TestInterface.cpp

Index: Source/bindings/tests/results/core/V8TestInterface.cpp
diff --git a/Source/bindings/tests/results/core/V8TestInterface.cpp b/Source/bindings/tests/results/core/V8TestInterface.cpp
index 26d2ea31b127387aa168166356cc048ed909c438..633d348188e4449be8f5f8aa718a6c71840717ee 100644
--- a/Source/bindings/tests/results/core/V8TestInterface.cpp
+++ b/Source/bindings/tests/results/core/V8TestInterface.cpp
@@ -1904,6 +1904,26 @@ static void partial2StaticVoidMethodMethodCallback(const v8::FunctionCallbackInf
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
+static void toJSONMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    ExceptionState exceptionState(ExceptionState::ExecutionContext, "toJSON", "TestInterface", info.Holder(), info.GetIsolate());
+    TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
+    ScriptState* scriptState = ScriptState::current(info.GetIsolate());
+    ScriptValue result = impl->toJSONForBinding(scriptState, exceptionState);
+    if (exceptionState.hadException()) {
+        exceptionState.throwIfNeeded();
+        return;
+    }
+    v8SetReturnValue(info, result.v8Value());
+}
+
+static void toJSONMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestInterfaceImplementationV8Internal::toJSONMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
 static void toStringMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestInterfaceImplementation* impl = V8TestInterface::toImpl(info.Holder());
@@ -2326,6 +2346,10 @@ void V8TestInterface::installV8TestInterfaceTemplate(v8::Local<v8::FunctionTempl
         "partial2StaticVoidMethod", TestInterfaceImplementationV8Internal::partial2StaticVoidMethodMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts,
     };
     V8DOMConfiguration::installMethod(isolate, functionTemplate, v8::Local<v8::Signature>(), v8::None, partial2StaticVoidMethodMethodConfiguration);
+    const V8DOMConfiguration::MethodConfiguration toJSONMethodConfiguration = {
+        "toJSON", TestInterfaceImplementationV8Internal::toJSONMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts,
+    };
+    V8DOMConfiguration::installMethod(isolate, prototypeTemplate, defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::DontEnum), toJSONMethodConfiguration);
     const V8DOMConfiguration::MethodConfiguration toStringMethodConfiguration = {
         "toString", TestInterfaceImplementationV8Internal::toStringMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts,
     };