Switch Dart_Initialize to use a struct

runtime/bin/main.cc

 // Copyright (c) 2012, 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 <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 1709 matching lines @@
                             kPrecompiledLibraryName,
                             kPrecompiledInstructionsSymbolName));
       data_snapshot = reinterpret_cast<const uint8_t*>(
           LoadLibrarySymbol(snapshot_filename,
                             kPrecompiledLibraryName,
                             kPrecompiledDataSymbolName));
     }
   }
 
   // Initialize the Dart VM.
-  char* error = Dart_Initialize(
-      vm_isolate_snapshot_buffer, instructions_snapshot, data_snapshot,
-      CreateIsolateAndSetup, NULL, NULL, ShutdownIsolate,
-      NULL,
-      DartUtils::OpenFile,
-      DartUtils::ReadFile,
-      DartUtils::WriteFile,
-      DartUtils::CloseFile,
-      DartUtils::EntropySource,
-      GetVMServiceAssetsArchiveCallback);
+  Dart_InitializeParams init_params;
+  memset(&init_params, 0, sizeof(init_params));
+  init_params.version = DART_INITIALIZE_PARAMS_CURRENT_VERSION;
+  init_params.vm_isolate_snapshot = vm_isolate_snapshot_buffer;
+  init_params.instructions_snapshot = instructions_snapshot;
+  init_params.data_snapshot = data_snapshot;
+  init_params.create = CreateIsolateAndSetup;
+  init_params.shutdown = ShutdownIsolate;
+  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;
+  init_params.get_service_assets = GetVMServiceAssetsArchiveCallback;
+
+  char* error = Dart_Initialize(&init_params);
   if (error != NULL) {
     EventHandler::Stop();
     fprintf(stderr, "VM initialization failed: %s\n", error);
     fflush(stderr);
     free(error);
     Platform::Exit(kErrorExitCode);
   }
 
   Dart_RegisterIsolateServiceRequestCallback(
         "getIO", &ServiceGetIOHandler, NULL);
@@ skipping 37 matching lines @@
   Platform::Exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }