Charge network traffic to the uid of the process using the MediaPlayer.

Change-Id: I2bcb54b8232afd3fc7ee16289f37c7a7b3f23067
related-to-bug: 4517282
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 8bab471..e32b92a 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -306,7 +306,8 @@
                                         pid_t pid,
                                         int32_t connId,
                                         const sp<IMediaPlayerClient>& client,
-                                        int audioSessionId);
+                                        int audioSessionId,
+                                        uid_t uid);
                                 Client();
         virtual                 ~Client();
 
@@ -336,6 +337,7 @@
                     bool                        mLoop;
                     int32_t                     mConnId;
                     int                         mAudioSessionId;
+                    uid_t                       mUID;
 
         // Metadata filters.
         media::Metadata::Filter mMetadataAllow;  // protected by mLock