audio policy: allow silencing capture per port

Add the possibility to silence a particular AudioRecord
client rather than silencing all clients sharing the same UID.

Test: AudioRecordTest#testRecordNoDataForIdleUids

Change-Id: Ic472045cd45c7222ca3a88ccf131435fd1e26475
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 30f29d6..35126ad 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -258,7 +258,7 @@
     virtual status_t getHwOffloadEncodingFormatsSupportedForA2DP(
                 std::vector<audio_format_t> *formats) = 0;
 
-    virtual void     setAppState(uid_t uid, app_state_t state) = 0;
+    virtual void     setAppState(audio_port_handle_t portId, app_state_t state) = 0;
 
     virtual status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) = 0;