Separate mojo/shell into a runner and the application manager (shell)

mojo/shell/application_manager/identity.h

-// 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.
-
-#ifndef SHELL_APPLICATION_MANAGER_IDENTITY_H_
-#define SHELL_APPLICATION_MANAGER_IDENTITY_H_
-
-#include "url/gurl.h"
-
-namespace mojo {
-namespace shell {
-
-/**
- * Represents the identity of an application. |url| is the url of the
- * application. |qualifier| is a string that allows to tie a specific instance
- * of an application to another. It is used by content handlers that need to be
- * run in the context of another application.
- */
-struct Identity {
-  Identity(const GURL& url, const std::string& qualifier);
-  explicit Identity(const GURL& url);
-  bool operator<(const Identity& other) const;
-
-  const GURL url;
-  const std::string qualifier;
-};
-
-}  // namespace shell
-}  // namespace mojo
-
-#endif  // SHELL_APPLICATION_MANAGER_IDENTITY_H_