extensions: Use V8 Maybe APIs in NativeHandler

extensions/renderer/v8_context_native_handler.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/renderer/v8_context_native_handler.h"
 
 #include "base/bind.h"
 #include "extensions/common/features/feature.h"
 #include "extensions/renderer/dispatcher.h"
 #include "extensions/renderer/script_context.h"
@@ skipping 35 matching lines @@
 }
 
 void V8ContextNativeHandler::GetModuleSystem(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK_EQ(args.Length(), 1);
   CHECK(args[0]->IsObject());
   v8::Local<v8::Context> v8_context =
       v8::Local<v8::Object>::Cast(args[0])->CreationContext();
   ScriptContext* context =
       dispatcher_->script_context_set().GetByV8Context(v8_context);
-  args.GetReturnValue().Set(context->module_system()->NewInstance());
+  v8::Local<v8::Value> instance;
+  if (!context->module_system()->NewInstance().ToLocal(&instance))
+    NOTREACHED();  // This can happen if v8 has issues
+  args.GetReturnValue().Set(instance);
 }
 
 void V8ContextNativeHandler::RunWithNativesEnabledModuleSystem(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK_EQ(args.Length(), 1);
   CHECK(args[0]->IsFunction());
-  v8::Local<v8::Value> call_with_args[] = {
-      context()->module_system()->NewInstance()};
+  v8::Local<v8::Value> instance;
+  if (!context()->module_system()->NewInstance().ToLocal(&instance))
+    NOTREACHED();  // This can happen if v8 has issues
+  v8::Local<v8::Value> call_with_args[] = {instance};
   ModuleSystem::NativesEnabledScope natives_enabled(context()->module_system());
   context()->CallFunction(v8::Local<v8::Function>::Cast(args[0]), 1,
                           call_with_args);
 }
 
 }  // namespace extensions