Improved unit test code for Audioflinger.
diff --git a/libs/audioflinger/AudioDumpInterface.h b/libs/audioflinger/AudioDumpInterface.h
index 4de4a16..1136ce1 100644
--- a/libs/audioflinger/AudioDumpInterface.h
+++ b/libs/audioflinger/AudioDumpInterface.h
@@ -57,6 +57,7 @@
     AudioStreamOut*     finalStream() { return mFinalStream; }
     uint32_t            device() { return mDevice; }
 
+    int                 getId()  { return mId; }
 private:
     AudioDumpInterface *mInterface;
     int                  mId;