Use dictionaries for context creation attributes. Eliminate custom bindings.

Source/bindings/tests/results/core/V8TestObject.cpp

Index: Source/bindings/tests/results/core/V8TestObject.cpp
diff --git a/Source/bindings/tests/results/core/V8TestObject.cpp b/Source/bindings/tests/results/core/V8TestObject.cpp
index 9e357e932e79f0e1a3c28eaa97c46e293627172b..ec3f34b75c20b65d4422f0db58c01672efffe76b 100644
--- a/Source/bindings/tests/results/core/V8TestObject.cpp
+++ b/Source/bindings/tests/results/core/V8TestObject.cpp
@@ -6770,6 +6770,24 @@ static void testDictionaryMethodMethodCallback(const v8::FunctionCallbackInfo<v8
     TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
 }
 
+static void nullableTestDictionaryMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TestObject* impl = V8TestObject::toImpl(info.Holder());
+    Nullable<TestDictionary> result;
+    impl->nullableTestDictionaryMethod(result);
+    if (result.isNull())
+        v8SetReturnValueNull(info);
+    else
+        v8SetReturnValue(info, result.get());
+}
+
+static void nullableTestDictionaryMethodMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    TRACE_EVENT_SET_SAMPLING_STATE("blink", "DOMMethod");
+    TestObjectV8Internal::nullableTestDictionaryMethodMethod(info);
+    TRACE_EVENT_SET_SAMPLING_STATE("v8", "V8Execution");
+}
+
 static void nodeFilterMethodMethod(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestObject* impl = V8TestObject::toImpl(info.Holder());
@@ -10791,6 +10809,7 @@ static const V8DOMConfiguration::MethodConfiguration V8TestObjectMethods[] = {
     {"voidMethodTestEnumArg", TestObjectV8Internal::voidMethodTestEnumArgMethodCallback, 0, 1, V8DOMConfiguration::ExposedToAllScripts},
     {"dictionaryMethod", TestObjectV8Internal::dictionaryMethodMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts},
     {"testDictionaryMethod", TestObjectV8Internal::testDictionaryMethodMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts},
+    {"nullableTestDictionaryMethod", TestObjectV8Internal::nullableTestDictionaryMethodMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts},
     {"nodeFilterMethod", TestObjectV8Internal::nodeFilterMethodMethodCallback, 0, 0, V8DOMConfiguration::ExposedToAllScripts},
     {"promiseMethod", TestObjectV8Internal::promiseMethodMethodCallback, 0, 3, V8DOMConfiguration::ExposedToAllScripts},
     {"promiseMethodWithoutExceptionState", TestObjectV8Internal::promiseMethodWithoutExceptionStateMethodCallback, 0, 1, V8DOMConfiguration::ExposedToAllScripts},