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

mojo/edk/system/child_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_CHILD_BROKER_H_
-#define MOJO_EDK_SYSTEM_CHILD_BROKER_H_
-
-#include <stddef.h>
-#include <stdint.h>
-
-#include "base/compiler_specific.h"
-#include "base/containers/hash_tables.h"
-#include "base/macros.h"
-#include "base/memory/singleton.h"
-#include "base/process/process_handle.h"
-#include "base/synchronization/lock_impl.h"
-#include "mojo/edk/embedder/scoped_platform_handle.h"
-#include "mojo/edk/system/broker.h"
-#include "mojo/edk/system/message_in_transit_queue.h"
-#include "mojo/edk/system/routed_raw_channel.h"
-#include "mojo/edk/system/system_impl_export.h"
-
-namespace mojo {
-namespace edk {
-struct BrokerMessage;
-
-// An implementation of Broker used in (sandboxed) child processes. It talks
-// over sync IPCs to the (unsandboxed) parent process (specifically,
-// ChildBrokerHost) to convert handles to tokens and vice versa. It also sends
-// async messages to handle message pipe multiplexing.
-class MOJO_SYSTEM_IMPL_EXPORT ChildBroker
-    : public Broker, public RawChannel::Delegate {
- public:
-  static ChildBroker* GetInstance();
-
-  // Passes the platform handle that is used to talk to ChildBrokerHost.
-  void SetChildBrokerHostHandle(ScopedPlatformHandle handle);
-
-  // Broker implementation:
-#if defined(OS_WIN)
-  void CreatePlatformChannelPair(ScopedPlatformHandle* server,
-                                 ScopedPlatformHandle* client) override;
-  void HandleToToken(const PlatformHandle* platform_handles,
-                     size_t count,
-                     uint64_t* tokens) override;
-  void TokenToHandle(const uint64_t* tokens,
-                     size_t count,
-                     PlatformHandle* handles) override;
-#endif
-  void ConnectMessagePipe(uint64_t pipe_id,
-                          MessagePipeDispatcher* message_pipe) override;
-  void CloseMessagePipe(uint64_t pipe_id,
-                        MessagePipeDispatcher* message_pipe) override;
-
- private:
-  friend struct base::DefaultSingletonTraits<ChildBroker>;
-
-  ChildBroker();
-  ~ChildBroker() override;
-
-  // RawChannel::Delegate implementation:
-  void OnReadMessage(
-      const MessageInTransit::View& message_view,
-      ScopedPlatformHandleVectorPtr platform_handles) override;
-  void OnError(Error error) override;
-
-  // Callback for when a RoutedRawChannel is destroyed for cleanup.
-  void ChannelDestructed(RoutedRawChannel* channel);
-
-  // Sends a message over |parent_async_channel_|, queueing it if necessary.
-  void WriteAsyncMessage(scoped_ptr<MessageInTransit> message);
-
-  // Initializes |parent_async_channel_|.
-  void InitAsyncChannel(ScopedPlatformHandle parent_async_channel_handle);
-
-  // Helper method to connect the given MessagePipe to the channel.
-  void AttachMessagePipe(MessagePipeDispatcher* message_pipe,
-                         uint64_t pipe_id,
-                         RoutedRawChannel* raw_channel);
-
-#if defined(OS_WIN)
-  // Helper method to write the given message and read back the result.
-  bool WriteAndReadResponse(BrokerMessage* message,
-                            void* response,
-                            uint32_t response_size);
-
-  void CreatePlatformChannelPairNoLock(ScopedPlatformHandle* server,
-                                       ScopedPlatformHandle* client);
-
-  // Guards access to |parent_sync_channel_|.
-  // We use LockImpl instead of Lock because the latter adds thread checking
-  // that we don't want (since we lock in the constructor and unlock on another
-  // thread.
-  base::internal::LockImpl sync_channel_lock_;
-
-  // Pipe used for communication to the parent process. We use a pipe directly
-  // instead of bindings or RawChannel because we need to send synchronous
-  // messages with replies from any thread.
-  ScopedPlatformHandle parent_sync_channel_;
-#endif
-
-  // RawChannel used for asynchronous communication to and from the parent
-  // process. Since these messages are bidirectional, we can't use
-  // |parent_sync_channel_| which is only used for sync messages to the parent.
-  // However since the messages are asynchronous, we can use RawChannel for
-  // convenience instead of writing and reading from pipes manually. Although it
-  // would be convenient, we don't use Mojo IPC because it would be a layering
-  // violation (and cirular dependency) if the system layer depended on
-  // bindings.
-  RoutedRawChannel* parent_async_channel_;
-
-  // Queue of messages to |parent_async_channel_| that are sent before it is
-  // created.
-  MessageInTransitQueue async_channel_queue_;
-
-  // The following members are only used on the IO thread, so they don't need to
-  // be used under a lock.
-
-  // Maps from routing ids to the MessagePipeDispatcher that have requested to
-  // connect to them. When the parent replies with which process they should be
-  // connected to, they will migrate to |connected_pipes_|.
-  base::hash_map<uint64_t, MessagePipeDispatcher*> pending_connects_;
-
-  // These are MessagePipeDispatchers that are connected to other MPDs in this
-  // process, but they both connected before we had parent_sync_channel_ so we
-  // delayed connecting them.
-  base::hash_map<uint64_t, MessagePipeDispatcher*> pending_inprocess_connects_;
-
-  // Map from MessagePipeDispatcher to its RoutedRawChannel. This is needed so
-  // that when a MessagePipeDispatcher is closed we can remove the route for the
-  // corresponding RoutedRawChannel.
-  // Note the key is MessagePipeDispatcher*, instead of pipe_id, because when
-  // the two pipes are in the same process they will have one pipe_id but be
-  // connected to the two RoutedRawChannel objects below.
-  base::hash_map<MessagePipeDispatcher*, RoutedRawChannel*> connected_pipes_;
-
-  // Holds a map of all the RoutedRawChannel that connect this child process to
-  // any other process. The key is the peer process'd pid.
-  base::hash_map<base::ProcessId, RoutedRawChannel*> channels_;
-
-  // Used for message pipes in the same process.
-  RoutedRawChannel* in_process_pipes_channel1_;
-  RoutedRawChannel* in_process_pipes_channel2_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChildBroker);
-};
-
-}  // namespace edk
-}  // namespace mojo
-
-#endif  // MOJO_EDK_SYSTEM_CHILD_BROKER_H_