Fixes race in Shell

content/browser/mojo/mojo_shell_context.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 "content/browser/mojo/mojo_shell_context.h"
 
 #include <unordered_map>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 292 matching lines @@
   // Attach our ShellClientFactory implementation to the global connection.
   MojoShellConnection* shell_connection = MojoShellConnection::Get();
   CHECK(shell_connection);
   shell_connection->AddListener(base::WrapUnique(
       new ShellConnectionListener(std::move(browser_shell_connection))));
 }
 
 MojoShellContext::~MojoShellContext() {
   if (!IsRunningInMojoShell())
     MojoShellConnectionImpl::Destroy();
+  catalog_.reset();
 }
 
 // static
 void MojoShellContext::ConnectToApplication(
     const std::string& user_id,
     const std::string& name,
     const std::string& requestor_name,
     shell::mojom::InterfaceProviderRequest request,
     shell::mojom::InterfaceProviderPtr exposed_services,
     const shell::mojom::Connector::ConnectCallback& callback) {
@@ skipping 13 matching lines @@
   shell::Identity source_id(requestor_name, user_id);
   params->set_source(source_id);
   params->set_target(shell::Identity(name, user_id));
   params->set_remote_interfaces(std::move(request));
   params->set_local_interfaces(std::move(exposed_services));
   params->set_connect_callback(callback);
   shell_->Connect(std::move(params));
 }
 
 }  // namespace content