Don't do clean shutdown on Process.exit()

runtime/bin/process.cc

Index: runtime/bin/process.cc
diff --git a/runtime/bin/process.cc b/runtime/bin/process.cc
index 77461987bc0e396f319792e01db074e73b2b09f6..81886934817bc46b5a421e9c4210ac864cfc3df3 100644
--- a/runtime/bin/process.cc
+++ b/runtime/bin/process.cc
@@ -17,10 +17,6 @@
 namespace dart {
 namespace bin {
 
-// Global flag that is used to indicate that the VM should do a clean
-// shutdown.
-bool do_vm_shutdown = false;
-
 static const int kProcessIdNativeField = 0;
 
 int Process::global_exit_code_ = 0;
@@ -254,25 +250,7 @@ void FUNCTION_NAME(Process_Exit)(Dart_NativeArguments args) {
   int64_t status = 0;
   // Ignore result if passing invalid argument and just exit 0.
   DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 0), &status);
-  Dart_ShutdownIsolate();
-  Process::TerminateExitCodeHandler();
-  char* error = Dart_Cleanup();
-  if (error != NULL) {
-    Log::PrintErr("VM cleanup failed: %s\n", error);
-    free(error);
-  }
-  if (do_vm_shutdown) {
-#ifdef LEGACY_DEBUG_PROTOCOL_ENABLED
-    // Note that this dependency crosses logical project boundaries by making
-    // the dart:io implementation depend upon the standalone VM's legacy debug
-    // protocol. This breaks projects which want to use our dart:io
-    // implementation. Because the protocol is going away shortly, it's
-    // reasonable to leave it behind a #ifdef that is only enabled for the
-    // standalone VM for now.
-    DebuggerConnectionHandler::StopHandler();
-#endif
-    EventHandler::Stop();
-  }
+  Dart_ExitIsolate();
   Platform::Exit(static_cast<int>(status));
 }