[Gin] Add Arguments::GetHolderCreationContext()

extensions/renderer/chrome_setting.cc

Index: extensions/renderer/chrome_setting.cc
diff --git a/extensions/renderer/chrome_setting.cc b/extensions/renderer/chrome_setting.cc
index b883042902153159e581f0e3877c5e1b22acaa69..b5431277bd91122a49fae91a13480ee2a51060d7 100644
--- a/extensions/renderer/chrome_setting.cc
+++ b/extensions/renderer/chrome_setting.cc
@@ -104,10 +104,7 @@ void ChromeSetting::Get(gin::Arguments* arguments) {
 void ChromeSetting::Set(gin::Arguments* arguments) {
   v8::Isolate* isolate = arguments->isolate();
   v8::HandleScope handle_scope(isolate);
-
-  v8::Local<v8::Object> holder;
-  CHECK(arguments->GetHolder(&holder));
-  v8::Local<v8::Context> context = holder->CreationContext();
+  v8::Local<v8::Context> context = arguments->GetHolderCreationContext();
 
   v8::Local<v8::Value> value = arguments->PeekNext();
   // The set schema included in the Schema object is generic, since it varies
@@ -129,9 +126,7 @@ void ChromeSetting::Clear(gin::Arguments* arguments) {
 v8::Local<v8::Value> ChromeSetting::GetOnChangeEvent(
     gin::Arguments* arguments) {
   v8::Isolate* isolate = arguments->isolate();
-  v8::Local<v8::Object> holder;
-  CHECK(arguments->GetHolder(&holder));
-  v8::Local<v8::Context> context = holder->CreationContext();
+  v8::Local<v8::Context> context = arguments->GetHolderCreationContext();
   v8::Local<v8::Object> wrapper = GetWrapper(isolate);
   v8::Local<v8::Private> key = v8::Private::ForApi(
       isolate, gin::StringToSymbol(isolate, "onChangeEvent"));
@@ -161,9 +156,7 @@ void ChromeSetting::HandleFunction(const std::string& method_name,
                                    gin::Arguments* arguments) {
   v8::Isolate* isolate = arguments->isolate();
   v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::Object> holder;
-  CHECK(arguments->GetHolder(&holder));
-  v8::Local<v8::Context> context = holder->CreationContext();
+  v8::Local<v8::Context> context = arguments->GetHolderCreationContext();
 
   std::vector<v8::Local<v8::Value>> argument_list;
   if (arguments->Length() > 0) {