audio policy: binder calls for dynamic audio policy mixes

Add binder calls to register and unregister dynamic mixes
to AudioPolicyManager.

Bug: 16009464.

Change-Id: I4ef38166d0cfc88c984970969380d0cd6eb083ac
diff --git a/services/audiopolicy/AudioPolicyService.h b/services/audiopolicy/AudioPolicyService.h
index da17728..09375cf 100644
--- a/services/audiopolicy/AudioPolicyService.h
+++ b/services/audiopolicy/AudioPolicyService.h
@@ -30,6 +30,7 @@
 #include <media/IAudioPolicyService.h>
 #include <media/ToneGenerator.h>
 #include <media/AudioEffect.h>
+#include <media/AudioPolicy.h>
 #include <hardware_legacy/AudioPolicyInterface.h>
 #include "AudioPolicyEffects.h"
 #include "AudioPolicyManager.h"
@@ -185,6 +186,8 @@
 
     virtual audio_mode_t getPhoneState();
 
+    virtual status_t registerPolicyMixes(Vector<AudioMix> mixes, bool registration);
+
             status_t doStopOutput(audio_io_handle_t output,
                                   audio_stream_type_t stream,
                                   audio_session_t session);