Ban cross origin WebSocket connections to the service protocol

runtime/bin/gen_snapshot.cc

Index: runtime/bin/gen_snapshot.cc
diff --git a/runtime/bin/gen_snapshot.cc b/runtime/bin/gen_snapshot.cc
index cc8bb06692a2afc7c9df6cafce3c1d42eed1c66b..5d43bc7af6dbcc54af6defb73144d190f95f5d6c 100644
--- a/runtime/bin/gen_snapshot.cc
+++ b/runtime/bin/gen_snapshot.cc
@@ -1169,7 +1169,10 @@ static Dart_Isolate CreateServiceIsolate(const char* script_uri,
   CHECK_RESULT(result);
   ASSERT(Dart_IsServiceIsolate(isolate));
   // Load embedder specific bits and return. Will not start http server.
-  if (!VmService::Setup("127.0.0.1", -1, false /* running_precompiled */)) {
+  if (!VmService::Setup("127.0.0.1",
+                        -1,
+                        false /* running_precompiled */,
+                        false /* server dev mode */)) {
     *error = strdup(VmService::GetErrorMessage());
     return NULL;
   }