Use ChannelMojo for remote security key channels.

remoting/host/security_key/security_key_ipc_client.h

 // Copyright 2016 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 REMOTING_HOST_SECURITY_KEY_SECURITY_KEY_IPC_CLIENT_H_
 #define REMOTING_HOST_SECURITY_KEY_SECURITY_KEY_IPC_CLIENT_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "ipc/ipc_listener.h"
+#include "mojo/edk/embedder/named_platform_handle.h"
+#include "mojo/edk/embedder/scoped_platform_handle.h"
 
 namespace IPC {
 class Channel;
 class Message;
 }  // IPC
 
 namespace remoting {
 
 // Responsible for handing the client end of the IPC channel between the
 // the network process (server) and remote_security_key process (client).
 // The public methods are virtual to allow for using fake objects for testing.
 class SecurityKeyIpcClient : public IPC::Listener {
  public:
   SecurityKeyIpcClient();
   ~SecurityKeyIpcClient() override;
 
   // Used to send security key extension messages to the client.
   typedef base::Callback<void(const std::string& response_data)>
       ResponseCallback;
 
   // Returns true if there is an active remoting session which supports
   // security key request forwarding.
-  virtual bool WaitForSecurityKeyIpcServerChannel();
+  virtual bool CheckForSecurityKeyIpcServerChannel();
 
   // Begins the process of connecting to the IPC channel which will be used for
   // exchanging security key messages.
   // |connection_ready_callback| is called when a channel has been established
   // and security key requests can be sent.
   // |connection_error_callback| is stored and will be called back for any
   // unexpected errors that occur while establishing, or during, the session.
   virtual void EstablishIpcConnection(
       const base::Closure& connection_ready_callback,
       const base::Closure& connection_error_callback);
 
   // Sends a security key request message to the network process to be forwarded
   // to the remote client.
   virtual bool SendSecurityKeyRequest(
       const std::string& request_payload,
       const ResponseCallback& response_callback);
 
   // Closes the IPC channel if connected.
   virtual void CloseIpcConnection();
 
-  // Allows tests to override the initial IPC channel used to retrieve IPC
-  // connection details.
-  void SetInitialIpcChannelNameForTest(
-      const std::string& initial_ipc_channel_name);
+  // Allows tests to override the IPC channel.
+  void SetIpcChannelHandleForTest(
+      const mojo::edk::NamedPlatformHandle& channel_handle);
 
   // Allows tests to override the expected session ID.
   void SetExpectedIpcServerSessionIdForTest(uint32_t expected_session_id);
 
  private:
   // IPC::Listener implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
   void OnChannelConnected(int32_t peer_pid) override;
   void OnChannelError() override;
 
   // Handles the ConnectionDetails IPC message.
   void OnConnectionDetails(const std::string& request_data);
 
   // Handles security key response IPC messages.
   void OnSecurityKeyResponse(const std::string& request_data);
 
   // Establishes a connection to the specified IPC Server channel.
-  void ConnectToIpcChannel(const std::string& channel_name);
+  void ConnectToIpcChannel();
 
   // Used to validate the IPC Server process is running in the correct session.
   // '0' (default) corresponds to the session the network process runs in.
   uint32_t expected_ipc_server_session_id_ = 0;
 
-  // Name for the IPC channel used for exchanging security key messages.
-  std::string ipc_channel_name_;
 
   // Name of the initial IPC channel used to retrieve connection info.
-  std::string initial_ipc_channel_name_;
+  mojo::edk::NamedPlatformHandle named_channel_handle_;
+
+  // A handle for the IPC channel used for exchanging security key messages.
+  mojo::edk::ScopedPlatformHandle channel_handle_;
 
   // Signaled when the IPC connection is ready for security key requests.
   base::Closure connection_ready_callback_;
 
   // Signaled when an error occurs in either the IPC channel or communication.
   base::Closure connection_error_callback_;
 
   // Signaled when a security key response has been received.
   ResponseCallback response_callback_;
 
   // Used for sending/receiving security key messages between processes.
   std::unique_ptr<IPC::Channel> ipc_channel_;
 
   base::ThreadChecker thread_checker_;
 
   base::WeakPtrFactory<SecurityKeyIpcClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SecurityKeyIpcClient);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SECURITY_KEY_SECURITY_KEY_IPC_CLIENT_H_