Always set the error handler closure of Binding<> after binding to a message pipe.

mojo/shell/application_instance.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/shell/application_instance.h"
 
 #include "base/bind.h"
 #include "base/stl_util.h"
 #include "mojo/application/public/interfaces/content_handler.mojom.h"
 #include "mojo/common/common_type_converters.h"
@@ skipping 13 matching lines @@
       identity_(identity),
       allow_any_application_(identity.filter().size() == 1 &&
                              identity.filter().count("*") == 1),
       requesting_content_handler_id_(requesting_content_handler_id),
       on_application_end_(on_application_end),
       application_(application.Pass()),
       binding_(this),
       queue_requests_(false),
       native_runner_(nullptr),
       pid_(base::kNullProcessId) {
-  binding_.set_connection_error_handler([this]() { OnConnectionError(); });
 }
 
 ApplicationInstance::~ApplicationInstance() {
   for (auto request : queued_client_requests_)
     request->connect_callback().Run(kInvalidContentHandlerID);
   STLDeleteElements(&queued_client_requests_);
 }
 
 void ApplicationInstance::InitializeApplication() {
   ShellPtr shell;
   binding_.Bind(GetProxy(&shell));
+  binding_.set_connection_error_handler([this]() { OnConnectionError(); });
   application_->Initialize(shell.Pass(), identity_.url().spec());
 }
 
 void ApplicationInstance::ConnectToClient(
     scoped_ptr<ConnectToApplicationParams> params) {
   if (queue_requests_) {
     queued_client_requests_.push_back(params.release());
     return;
   }
 
@@ skipping 111 matching lines @@
 
   queue_requests_ = false;
   for (auto request : queued_client_requests_)
     CallAcceptConnection(make_scoped_ptr(request));
 
   queued_client_requests_.clear();
 }
 
 }  // namespace shell
 }  // namespace mojo