Instantiate MediaPlayerService for fuzzing

Adding fuzzing mode method to instantiate MediaPlayerService.
Created cc_defaults for libmediaplayerservice.

Test: m libmediaplayerservice
Bug: 232439428
Change-Id: I5dc39475cff0830dfff6c00ae4394cb4874aae30
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 86be3fe..d4ee8e5 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -505,6 +505,12 @@
                 SortedVector< wp<Client> >  mClients;
                 SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients;
                 int32_t                     mNextConnId;
+
+#ifdef FUZZ_MODE_MEDIA_PLAYER_SERVICE
+public:
+    friend class sp<MediaPlayerService>;
+    static sp<MediaPlayerService> createForFuzzTesting();
+#endif // FUZZ_MODE_MEDIA_PLAYER_SERVICE
 };
 
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