Open backdoor in VoiceEngineImpl to get at the actual voe::Channel objects from an ID.

webrtc/voice_engine/channel_proxy.h

Index: webrtc/voice_engine/channel_proxy.h
diff --git a/webrtc/voice_engine/channel_proxy.h b/webrtc/voice_engine/channel_proxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..5a7ead2ba29259c0ada6580a460e4c388c4cdcb1
--- /dev/null
+++ b/webrtc/voice_engine/channel_proxy.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_VOICE_ENGINE_CHANNEL_PROXY_H_
+#define WEBRTC_VOICE_ENGINE_CHANNEL_PROXY_H_
+
+#include "webrtc/voice_engine/channel_manager.h"
+
+#include <string>
+
+namespace webrtc {
+namespace voe {
+
+// This class provides the "view" of a voe::Channel that we need to implement
+// webrtc::AudioSendStream and webrtc::AudioReceiveStream. It serves two
+// purposes:
+//  1. Allow mocking just the interfaces used, instead of the entire
+//     voe::Channel class.
+//  2. Provide a refined interface for the stream classes, including assumptions
+//     on return values and input adaptation.
+class ChannelProxy {
+ public:
+  ChannelProxy();
+  explicit ChannelProxy(const ChannelOwner& channel_owner);
+  virtual ~ChannelProxy() {}
+
+  virtual void SetRTCPStatus(bool enable);
+  virtual void SetLocalSSRC(uint32_t ssrc);
+  virtual void SetRTCP_CNAME(const std::string& c_name);
+
+ private:
+  ChannelOwner channel_owner_;
+};
+}  // namespace voe
+}  // namespace webrtc
+
+#endif  // WEBRTC_VOICE_ENGINE_CHANNEL_PROXY_H_