Fix some service protocol isolate lifecycle races

runtime/vm/service.cc

 // Copyright (c) 2013, 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 "vm/service.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/globals.h"
 
@@ skipping 2996 matching lines @@
     }
     isolate->message_handler()->set_should_pause_on_start(false);
     isolate->SetResumeRequest();
     if (Service::debug_stream.enabled()) {
       ServiceEvent event(isolate, ServiceEvent::kResume);
       Service::HandleEvent(&event);
     }
     PrintSuccess(js);
     return true;
   }
+  if (isolate->message_handler()->should_pause_on_start()) {
+    isolate->message_handler()->set_should_pause_on_start(false);
+    isolate->SetResumeRequest();
+    if (Service::debug_stream.enabled()) {
+      ServiceEvent event(isolate, ServiceEvent::kResume);
+      Service::HandleEvent(&event);
+    }
+    PrintSuccess(js);
+    return true;
+  }
   if (isolate->message_handler()->is_paused_on_exit()) {
     isolate->message_handler()->set_should_pause_on_exit(false);
     isolate->SetResumeRequest();
     // We don't send a resume event because we will be exiting.
     PrintSuccess(js);
     return true;
   }
   if (isolate->debugger()->PauseEvent() != NULL) {
     if (step_param != NULL) {
       if (strcmp(step_param, "Into") == 0) {
@@ skipping 1069 matching lines @@
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart