[Chromoting] Use ProcessStatsSender in host process

remoting/protocol/connection_to_client.h

 // Copyright (c) 2012 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_PROTOCOL_CONNECTION_TO_CLIENT_H_
 #define REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_
 
 #include <stdint.h>
 
 #include <string>
 
 #include "remoting/protocol/transport.h"
 
 namespace webrtc {
 class DesktopCapturer;
 }  // namespace webrtc
 
 namespace remoting {
 
 namespace protocol {
 
 class AudioStream;
 class AudioSource;
 class ClientStub;
 class ClipboardStub;
 class HostStub;
 class InputStub;
+class ProcessStatsStub;
 class Session;
 class VideoStream;
 
 // This interface represents a remote viewer connection to the chromoting host.
 // It sets up all protocol channels and connects them to the stubs.
 class ConnectionToClient {
  public:
   class EventHandler {
    public:
     // Called when the network connection is authenticating
@@ skipping 44 matching lines @@
   // Starts an audio stream. Returns nullptr if audio is not supported by the
   // client.
   virtual std::unique_ptr<AudioStream> StartAudioStream(
       std::unique_ptr<AudioSource> audio_source) = 0;
 
   // The client stubs used by the host to send control messages to the client.
   // The stub must not be accessed before OnConnectionAuthenticated(), or
   // after OnConnectionClosed().
   virtual ClientStub* client_stub() = 0;
 
+  // The process stats stub used by the host to send process usage data to the
+  // client. The stub may be nullptr.
+  virtual ProcessStatsStub* stats_stub() = 0;
+
   // Set the stubs which will handle messages we receive from the client. These
   // must be called in EventHandler::OnConnectionAuthenticated().
   virtual void set_clipboard_stub(ClipboardStub* clipboard_stub) = 0;
   virtual void set_host_stub(HostStub* host_stub) = 0;
   virtual void set_input_stub(InputStub* input_stub) = 0;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_