Move view_manager service implementation to //services

mojo/services/view_manager/access_policy_delegate.h

-// Copyright 2014 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 MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_
-#define MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_
-
-#include <vector>
-
-#include "base/containers/hash_tables.h"
-#include "mojo/services/view_manager/ids.h"
-
-namespace mojo {
-namespace service {
-
-class ServerView;
-
-// Delegate used by the AccessPolicy implementations to get state.
-class AccessPolicyDelegate {
- public:
-  // Returns true if |id| is the root of the connection.
-  virtual bool IsRootForAccessPolicy(const ViewId& id) const = 0;
-
-  // Returns true if |view| has been exposed to the client.
-  virtual bool IsViewKnownForAccessPolicy(const ServerView* view) const = 0;
-
-  // Returns true if Embed(view) has been invoked on |view|.
-  virtual bool IsViewRootOfAnotherConnectionForAccessPolicy(
-      const ServerView* view) const = 0;
-
- protected:
-  virtual ~AccessPolicyDelegate() {}
-};
-
-}  // namespace service
-}  // namespace mojo
-
-#endif  // MOJO_SERVICES_VIEW_MANAGER_ACCESS_POLICY_DELEGATE_H_