Add isolate event handler setup in order to be able to propagate isolate

bin/main.cc

Index: bin/main.cc
===================================================================
--- bin/main.cc	(revision 13083)
+++ bin/main.cc	(working copy)
@@ -663,6 +663,12 @@
 
   DartUtils::SetOriginalWorkingDirectory();
 
+  // Start the debugger wire protocol handler if necessary.
+  if (start_debugger) {
+    ASSERT(debug_port != 0);
+    DebuggerConnectionHandler::StartHandler(debug_ip, debug_port);
+  }
+
   // Call CreateIsolateAndSetup which creates an isolate and loads up
   // the specified application script.
   char* error = NULL;
@@ -714,12 +720,6 @@
     }
   }
 
-  // Start the debugger wire protocol handler if necessary.
-  if (start_debugger) {
-    ASSERT(debug_port != 0);
-    DebuggerConnectionHandler::StartHandler(debug_ip, debug_port);
-  }
-
   // Lookup and invoke the top level main function.
   result = Dart_Invoke(library, Dart_NewString("main"), 0, NULL);
   if (Dart_IsError(result)) {