MediaMetric:Save each item indiviually for AudioPowerUsage

Bug: 161091764
Test: Making any voice call with any combo devices

Signed-off-by: rogerfang <rogerfang@google.com>
Change-Id: I7ec4fe6b530d30d1f5c1a6c8a4d25d2de354cb42
diff --git a/services/mediametrics/AudioPowerUsage.h b/services/mediametrics/AudioPowerUsage.h
index 446ff4f..b705a6a 100644
--- a/services/mediametrics/AudioPowerUsage.h
+++ b/services/mediametrics/AudioPowerUsage.h
@@ -85,6 +85,8 @@
          REQUIRES(mLock);
     static void sendItem(const std::shared_ptr<const mediametrics::Item>& item);
     void collect();
+    bool saveAsItems_l(int32_t device, int64_t duration, int32_t type, double average_vol)
+         REQUIRES(mLock);
 
     AudioAnalytics * const mAudioAnalytics;
     const bool mDisabled;