Remove files that are no longer used in the Port EDK.

mojo/edk/system/broker.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 MOJO_EDK_SYSTEM_BROKER_H_
-#define MOJO_EDK_SYSTEM_BROKER_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "mojo/edk/embedder/scoped_platform_handle.h"
-
-namespace mojo {
-namespace edk {
-class MessagePipeDispatcher;
-class RawChannel;
-
-// An interface for communicating to a central "broker" process from each
-// process using the EDK. It serves two purposes:
-// 1) Windows only: brokering to help child processes as they can't create
-//    named pipes or duplicate handles.
-// 2) All platforms: support multiplexed messages pipes.
-
-class MOJO_SYSTEM_IMPL_EXPORT Broker {
- public:
-  virtual ~Broker() {}
-
-#if defined(OS_WIN)
-  // It is safe to call these three methods from any thread.
-
-  // Create a PlatformChannelPair.
-  virtual void CreatePlatformChannelPair(ScopedPlatformHandle* server,
-                                         ScopedPlatformHandle* client) = 0;
-
-  // Converts the given platform handles to tokens.
-  // |tokens| should point to memory that is sizeof(uint64_t) * count;
-  virtual void HandleToToken(const PlatformHandle* platform_handles,
-                             size_t count,
-                             uint64_t* tokens) = 0;
-
-  // Converts the given tokens to platformhandles.
-  // |handles| should point to memory that is sizeof(HANDLE) * count;
-  virtual void TokenToHandle(const uint64_t* tokens,
-                             size_t count,
-                             PlatformHandle* handles) = 0;
-#endif
-
-  // Multiplexing related methods. They are called from the IO thread only.
-
-  // Called by |message_pipe| so that it receives messages for the given
-  // globally unique |pipe_id|. When the connection is established,
-  // MessagePipeDispatcher::GotNonTransferableChannel is called with the channel
-  // that it can use for sending messages.
-  virtual void ConnectMessagePipe(uint64_t pipe_id,
-                                  MessagePipeDispatcher* message_pipe) = 0;
-
-  // Called by |message_pipe| when it's closing so that its route can be
-  // unregistered.
-  // It's ok to call this from a callback (i.e. from OnError or
-  // GotNonTransferableChannel).
-  virtual void CloseMessagePipe(uint64_t pipe_id,
-                                MessagePipeDispatcher* message_pipe) = 0;
-};
-
-}  // namespace edk
-}  // namespace mojo
-
-#endif  // MOJO_EDK_SYSTEM_BROKER_H_