Always initialize the EventHandler in the standalone.

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_debugger_api.h"
@@ skipping 726 matching lines @@
   // Start the debugger wire protocol handler if necessary.
   if (start_debugger) {
     ASSERT(debug_port >= 0);
     bool print_msg = verbose_debug_seen || (debug_port == 0);
     debug_port = DebuggerConnectionHandler::StartHandler(debug_ip, debug_port);
     if (print_msg) {
       Log::Print("Debugger listening on port %d\n", debug_port);
     }
   }
 
+  // Start event handler.
+  EventHandler::Start();
+
   // Start the VM service isolate, if necessary.
   if (start_vm_service) {
     ASSERT(vm_service_server_port >= 0);
     bool r = VmService::Start(vm_service_server_port);
     if (!r) {
       Log::PrintErr("Could not start VM Service isolate %s",
                     VmService::GetErrorMessage());
     }
   }
 
@@ skipping 96 matching lines @@
         return DartErrorExit(result);
       }
     }
   }
 
   Dart_ExitScope();
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.
   Process::TerminateExitCodeHandler();
-  EventHandler::Stop();
 
   // Free copied argument strings if converted.
   if (argv_converted) {
     for (int i = 0; i < argc; i++) free(argv[i]);
   }
 
   return Process::GlobalExitCode();
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }