Allow the native resolver to setup whether it needs the Dart API scope to

runtime/vm/custom_isolate_test.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 
 #include "vm/unit_test.h"
 
 // Custom Isolate Test.
 //
 // This mid-size test uses the Dart Embedding Api to create a custom
 // isolate abstraction.  Instead of having a dedicated thread for each
 // isolate, as is the case normally, this implementation shares a
 // single thread among the isolates using an event queue.
 
 namespace dart {
 
 static void native_echo(Dart_NativeArguments args);
 static void CustomIsolateImpl_start(Dart_NativeArguments args);
-static Dart_NativeFunction NativeLookup(Dart_Handle name, int argc);
+static Dart_NativeFunction NativeLookup(Dart_Handle name,
+                                        int argc,
+                                        bool* auto_setup_scope);
 
 
 static const char* kCustomIsolateScriptChars =
     "import 'dart:isolate';\n"
     "\n"
     "RawReceivePort mainPort;\n"
     "\n"
     "echo(arg) native \"native_echo\";\n"
     "\n"
     "class CustomIsolateImpl implements CustomIsolate {\n"
@@ skipping 190 matching lines @@
 }
 
 
 static void NotifyMessage(Dart_Isolate dest_isolate) {
   OS::Print("-- Notify isolate(%p) of pending message --\n", dest_isolate);
   OS::Print("-- Adding MessageEvent to queue --\n");
   event_queue->Add(new MessageEvent(dest_isolate));
 }
 
 
-static Dart_NativeFunction NativeLookup(Dart_Handle name, int argc) {
+static Dart_NativeFunction NativeLookup(Dart_Handle name,
+                                        int argc,
+                                        bool* auto_setup_scope) {
+  ASSERT(auto_setup_scope != NULL);
+  *auto_setup_scope = false;
   const char* name_str = NULL;
   EXPECT(Dart_IsString(name));
   EXPECT_VALID(Dart_StringToCString(name, &name_str));
   if (strcmp(name_str, "native_echo") == 0) {
     return &native_echo;
   } else if (strcmp(name_str, "CustomIsolateImpl_start") == 0) {
     return &CustomIsolateImpl_start;
   }
   return NULL;
 }
@@ skipping 90 matching lines @@
     event = event_queue->Get();
   }
   OS::Print("-- Finished event loop --\n");
   EXPECT_STREQ("Received: 43", saved_echo);
   free(const_cast<char*>(saved_echo));
 
   delete event_queue;
 }
 
 }  // namespace dart