AudioTrack: Enable logSessionId for original proto

Test: Modified atest AudioTrackTest#testSetLogSessionId
Test: adb shell dumpsys media.metrics
Bug: 180543764
Change-Id: I1db9269f3f9c620b605ce531301eec4ef97a1fab
diff --git a/media/libaudioclient/AudioTrack.cpp b/media/libaudioclient/AudioTrack.cpp
index a8255a5..b7ba30d 100644
--- a/media/libaudioclient/AudioTrack.cpp
+++ b/media/libaudioclient/AudioTrack.cpp
@@ -218,6 +218,7 @@
     mMetricsItem->setCString(MM_PREFIX "encoding", toString(track->mFormat).c_str());
     mMetricsItem->setInt32(MM_PREFIX "frameCount", (int32_t)track->mFrameCount);
     mMetricsItem->setCString(MM_PREFIX "attributes", toString(track->mAttributes).c_str());
+    mMetricsItem->setCString(MM_PREFIX "logSessionId", track->mLogSessionId.c_str());
 }
 
 // hand the user a snapshot of the metrics.