[mojo] Delete third_party/mojo

third_party/mojo/src/mojo/edk/system/endpoint_relayer.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 THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_ENDPOINT_RELAYER_H_
-#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_ENDPOINT_RELAYER_H_
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "mojo/public/cpp/system/macros.h"
-#include "third_party/mojo/src/mojo/edk/system/channel_endpoint_client.h"
-#include "third_party/mojo/src/mojo/edk/system/mutex.h"
-#include "third_party/mojo/src/mojo/edk/system/system_impl_export.h"
-
-namespace mojo {
-namespace system {
-
-class ChannelEndpoint;
-
-// This is a simple |ChannelEndpointClient| that just relays messages between
-// two |ChannelEndpoint|s (without the overhead of |MessagePipe|).
-class MOJO_SYSTEM_IMPL_EXPORT EndpointRelayer final
-    : public ChannelEndpointClient {
- public:
-  // A class that can inspect and optionally handle messages of type
-  // |Type::ENDPOINT_CLIENT| received from either |ChannelEndpoint|.
-  //
-  // Instances of implementations of this class will be owned by
-  // |EndpointRelayer|s.
-  //
-  // Destructors may not call methods of the |EndpointRelayer| (nor of the
-  // |ChannelEndpoint|s).
-  class MOJO_SYSTEM_IMPL_EXPORT Filter {
-   public:
-    virtual ~Filter() {}
-
-    // Called by |EndpointRelayer::OnReadMessage()| for messages of type
-    // |Type::ENDPOINT_CLIENT|. This is only called by the |EndpointRelayer| if
-    // it is still the client of the sending endpoint.
-    //
-    // |endpoint| (which will not be null) is the |ChannelEndpoint|
-    // corresponding to |port| (i.e., the endpoint the message was received
-    // from), whereas |peer_endpoint| (which may be null) is that corresponding
-    // to the peer port (i.e., the endpoint to which the message would be
-    // relayed).
-    //
-    // This should return true if the message is consumed (in which case
-    // ownership is transferred), and false if not (in which case the message
-    // will be relayed as usual).
-    //
-    // This will always be called under |EndpointRelayer|'s lock. This may call
-    // |ChannelEndpoint| methods. However, it may not call any of
-    // |EndpointRelayer|'s methods.
-    virtual bool OnReadMessage(ChannelEndpoint* endpoint,
-                               ChannelEndpoint* peer_endpoint,
-                               MessageInTransit* message) = 0;
-
-   protected:
-    Filter() {}
-
-   private:
-    MOJO_DISALLOW_COPY_AND_ASSIGN(Filter);
-  };
-
-  EndpointRelayer();
-
-  // Gets the other port number (i.e., 0 -> 1, 1 -> 0).
-  static unsigned GetPeerPort(unsigned port);
-
-  // Initialize this object. This must be called before any other method.
-  void Init(ChannelEndpoint* endpoint0,
-            ChannelEndpoint* endpoint1) MOJO_NOT_THREAD_SAFE;
-
-  // Sets (or resets) the filter, which can (optionally) handle/filter
-  // |Type::ENDPOINT_CLIENT| messages (see |Filter| above).
-  void SetFilter(scoped_ptr<Filter> filter);
-
-  // |ChannelEndpointClient| methods:
-  bool OnReadMessage(unsigned port, MessageInTransit* message) override;
-  void OnDetachFromChannel(unsigned port) override;
-
- private:
-  ~EndpointRelayer() override;
-
-  Mutex mutex_;
-  scoped_refptr<ChannelEndpoint> endpoints_[2] MOJO_GUARDED_BY(mutex_);
-  scoped_ptr<Filter> filter_ MOJO_GUARDED_BY(mutex_);
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(EndpointRelayer);
-};
-
-}  // namespace system
-}  // namespace mojo
-
-#endif  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_ENDPOINT_RELAYER_H_