- Convert all isolate flags to a bit field.

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 <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "include/dart_api.h"
 #include "include/dart_tools_api.h"
@@ skipping 336 matching lines @@
 }
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 static bool ProcessFrontendOption(const char* filename,
                                   CommandLineOptions* vm_options) {
   ASSERT(filename != NULL);
   if (filename[0] == '\0') {
     return false;
   }
   dfe.set_frontend_filename(filename);
-  vm_options->AddArgument("--use-dart-frontend");
   return true;
 }
 
 static bool ProcessKernelBinariesOption(const char* dirname,
                                         CommandLineOptions* vm_options) {
   ASSERT(dirname != NULL);
   if (dirname[0] == '\0') {
     return false;
   }
   dfe.SetKernelBinaries(dirname);
@@ skipping 1478 matching lines @@
   init_params.vm_snapshot_instructions = vm_snapshot_instructions;
   init_params.create = CreateIsolateAndSetup;
   init_params.shutdown = OnIsolateShutdown;
   init_params.cleanup = DeleteIsolateData;
   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;
+#if !defined(DART_PRECOMPILED_RUNTIME)
+  init_params.start_kernel_isolate = dfe.UseDartFrontend();
+#else
+  init_params.start_kernel_isolate = false;
+#endif
 
   char* error = Dart_Initialize(&init_params);
   if (error != NULL) {
     EventHandler::Stop();
     Log::PrintErr("VM initialization failed: %s\n", error);
     free(error);
     Platform::Exit(kErrorExitCode);
   }
 
   Dart_SetServiceStreamCallbacks(&ServiceStreamListenCallback,
@@ skipping 39 matching lines @@
   Platform::Exit(Process::GlobalExitCode());
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   dart::bin::main(argc, argv);
   UNREACHABLE();
 }