Remove dependency on AudioStub in ConnectionToClient

remoting/protocol/audio_stream.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_PROTOCOL_audio_stream_H_
+#define REMOTING_PROTOCOL_audio_stream_H_
+
+namespace remoting {
+namespace protocol {
+
+// AudioStream is responsible for fetching audio data from an AudioSource,
+// and sending it to the client.
+class AudioStream {
+ public:
+  AudioStream() {}
+  virtual ~AudioStream() {}
+
+  // Pauses or resumes audio on a running session. This leaves the audio
+  // capturer running, and only affects whether or not the captured audio is
+  // encoded and sent on the wire.
+  virtual void Pause(bool pause) = 0;
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_audio_stream_H_