Switch Dart_Initialize to use a struct

runtime/bin/gen_snapshot.cc

 // Copyright (c) 2013, 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 1213 matching lines @@
 #endif
   }
 
   Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
 
   // Initialize the Dart VM.
   // Note: We don't expect isolates to be created from dart code during
   // core library snapshot generation. However for the case when a full
   // snasphot is generated from a script (app_script_name != NULL) we will
   // need the service isolate to resolve URI and load code.
-  char* error = Dart_Initialize(
-      NULL,
-      NULL,
-      NULL,
-      (app_script_name != NULL) ? CreateServiceIsolate : NULL,
-      NULL,
-      NULL,
-      NULL,
-      NULL,
-      DartUtils::OpenFile,
-      DartUtils::ReadFile,
-      DartUtils::WriteFile,
-      DartUtils::CloseFile,
-      DartUtils::EntropySource,
-      NULL);
+
+  Dart_InitializeParams init_params;
+  memset(&init_params, 0, sizeof(init_params));
+  init_params.version = DART_INITIALIZE_PARAMS_CURRENT_VERSION;
+  if (app_script_name != NULL) {
+    init_params.create = CreateServiceIsolate;
+  }
+  init_params.file_open = DartUtils::OpenFile;
+  init_params.file_read = DartUtils::ReadFile;
+  init_params.file_write = DartUtils::WriteFile;
+  init_params.file_close = DartUtils::CloseFile;
+  init_params.entropy_source = DartUtils::EntropySource;
+
+  char* error = Dart_Initialize(&init_params);
   if (error != NULL) {
     Log::PrintErr("VM initialization failed: %s\n", error);
     free(error);
     return 255;
   }
 
   IsolateData* isolate_data = new IsolateData(NULL,
                                               commandline_package_root,
                                               commandline_packages_file);
   Dart_Isolate isolate = Dart_CreateIsolate(
@@ skipping 96 matching lines @@
   EventHandler::Stop();
   return 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }